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Format, validate, and beautify JSON data with error detection
Test regular expressions with real-time matching, flags support, and capture group display
Visual cron expression builder with human-readable descriptions and next run times
Decode JSON Web Tokens to inspect header, payload, and expiration status
Encode and decode text and files to and from Base64 format
Encode and decode URLs with component breakdown and query parameter parsing
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes using Web Crypto API
Generate random v4 UUIDs with bulk generation and one-click copy
Convert between Unix timestamps and human-readable dates with relative time
Format and beautify SQL queries with syntax highlighting and indentation
Minify HTML, CSS, and JavaScript code with before/after size comparison
Compare two texts side by side and highlight additions, deletions, and changes
Live Markdown editor with instant preview supporting tables, code blocks, and lists
Convert between YAML and JSON formats bidirectionally with validation
Interactive chmod permission calculator with symbolic and numeric modes
Paste a regex pattern and get a human-readable English explanation of what it does, step by step.
Design REST API endpoints with methods, paths, params, request/response bodies. Generate OpenAPI/Swagger YAML spec.
Describe what you want to do in plain English and get the right git command. Interactive decision tree approach.
Build webhook payloads for common services (Stripe, GitHub, Slack, Discord, Twilio). Generate test JSON.
Create and edit .env files with variable grouping, comments, validation. Import/export. Template generation.
Create markdown tables visually with rows/columns, alignment options, and copy markdown output
Visual builder for docker-compose.yml files with services, volumes, networks, and environment variables
Generate nginx server blocks for reverse proxy, static files, SSL, redirects, and load balancing
Generate a stylish GitHub profile README with intro, skills, stats, social links, and live preview
Analyze JavaScript/Python code for cyclomatic complexity, nesting depth, function count, and provide a score
Visual builder for DNS zone files with A, AAAA, CNAME, MX, TXT, SRV, NS records and BIND zone file export
Visualize multiple cron schedules on a 24h timeline, detect overlaps, and show next N runs
Paste JSON data to auto-generate a JSON Schema with types, required fields, and nested structures
Calculate API rate limits, token bucket parameters, burst capacity, and optimal retry timing with visual timeline
Enter CSS selectors, calculate and visualize specificity (inline, ID, class, element). Compare multiple selectors.
Press any key, show keyCode, key, code, which, location, modifier keys. Useful reference for keyboard event handling.
Build HTTP requests visually with method, URL, headers, body, auth. Generate cURL, fetch, axios, XMLHttpRequest code.
Enter Tailwind CSS classes, output the equivalent vanilla CSS properties with computed values.
Detect and display browser capabilities: WebGL, WebRTC, Service Workers, Web Audio, IndexedDB, Canvas, etc. with green/red indicators.
Calculate subnet details from CIDR notation: network address, broadcast, host range, usable hosts, wildcard mask
Analyze any IP address: class, type (public/private/loopback), binary, hex, and integer representation
Generate K8s manifests: Deployment, Service, Ingress, ConfigMap, Secret with a visual form builder
Build Terraform variable definitions with type, default, description, and validation rules
Searchable reference of essential Linux commands organized by category with examples
Interactive regex cheatsheet with categories: anchors, quantifiers, groups, character classes, lookaheads
Build SSH config file entries with Host, HostName, User, Port, IdentityFile, ProxyJump
Generate systemd unit files with [Unit], [Service], [Install] sections and common presets
Reference guide for log levels across frameworks: Log4j, Winston, Python logging, Serilog
Build common HTTP headers: Cache-Control, Content-Type, Authorization, CORS. Explain each directive
Visual Makefile builder with targets, dependencies, commands, variables and common templates
Visual package.json editor with name, version, scripts, dependencies, engines and validation
Build GitHub Actions workflows visually with triggers, jobs, and steps. Generate YAML output
Build PromQL queries visually: select metric, add labels, choose functions like rate, sum, avg
Searchable database of HTTP status codes, Unix signals, errno values, Windows HRESULT, and exit codes
Input JSON data, write JSONPath expressions, see matching results. Support dot notation, brackets, wildcards, filters.
Visual GraphQL query builder. Define types, fields, arguments. Generate query strings. Syntax highlighting.
Calculate P50, P95, P99 response times from a list of response time values. Show distribution histogram with Canvas.
Paste CSV/TSV data, view as sortable/filterable table. Column stats (min, max, avg for numbers). Export filtered data.
Paste encoded text, detect encoding type (Base64, URL-encoded, HTML entities, Unicode escapes, JWT, hex). Auto-decode.
Generate mock JSON responses for testing. Define schema (name, email, id, date, etc.), get formatted JSON output.
Visual SQL SELECT query builder. Add tables, columns, WHERE clauses, JOINs, ORDER BY, GROUP BY. Generate SQL.
Input text and regex with capture groups, extract and display all matched groups in a structured table.
Compare multiple timestamps across formats (Unix, ISO 8601, RFC 2822). Sort chronologically, show differences.
Compare two .env files side by side. Highlight added, removed, changed variables. Generate diff output.
Encode/decode HTML entities (named, numeric, hex). Quick buttons for common entities. Bulk conversion.
Parse URLs into components (protocol, host, path, query params, fragment). Build URLs from components. Copy result.
Edit TOML configuration files with syntax validation. Convert between TOML and JSON. Inline documentation.
Interactive guide to choosing a software license (MIT, Apache, GPL, BSD, etc.). Compare permissions/conditions/limitations. Generate LICENSE file.
Generate release notes from feature/fix/improvement bullet points. Multiple formats: Keep a Changelog, semantic, GitHub release style.
Estimate token count for text using BPE-like approximation. Show counts for GPT-4, Claude, Llama. Character, word, and sentence stats.
Interactive comparison table of major AI models: GPT-4, Claude, Gemini, Llama, Mistral. Context window, pricing, capabilities, release dates.
Searchable reference of prompt engineering techniques: chain-of-thought, few-shot, system prompts, personas, output formatting.
Convert data between fine-tuning formats: JSONL (OpenAI), CSV, Alpaca format. Add system/user/assistant messages.
Reference for embedding models: dimensions, size, performance benchmarks. OpenAI ada-002, Cohere, sentence-transformers.
Generate AI model cards with intended use, limitations, training data info, performance metrics, ethical considerations.
Format ML benchmark results into clean comparison tables. Input model names and scores, generate markdown/HTML table.
Interactive guide to data labeling/annotation best practices. Labeling guidelines template generator. Quality metrics reference.
Paste ABI event signature, decode event topic hashes. Reference of common ERC-20/721 events and function selectors.
Display current screen/viewport info: resolution, DPR, viewport size, orientation, color depth, touch support, OS/browser detection.
Upload a JPEG image and read its EXIF metadata: camera model, date, GPS coordinates, exposure, ISO, focal length, and more. Fully client-side.
Searchable reference of all ARIA roles with descriptions, required attributes, usage examples. Grouped by category (landmark, widget, structure).
Searchable database of ISO 639 language codes, ISO 3166 country codes, BCP 47 locale tags. Copy formatted codes.
Test right-to-left text rendering. Input text, toggle LTR/RTL/auto direction. Preview with different CSS direction settings.
Analyze text for Unicode properties: scripts used, character categories, bidi levels, code points. Detect mixed scripts.
Compare two JSON translation files for missing keys, extra keys, empty values. Diff view with highlighted issues.
Format dates as relative time ("2 hours ago", "in 3 days") in multiple locales using Intl.RelativeTimeFormat. Preview all locales.
Preview how numbers display across locales using Intl.NumberFormat: currency, decimal, percent, unit formatting.
Preview date/time formatting across locales using Intl.DateTimeFormat. All options for dateStyle, timeStyle, custom patterns.
Show Intl.PluralRules categories (zero, one, two, few, many, other) for different locales. Interactive tester with custom numbers.
Paste text, detect dominant script direction (LTR/RTL), identify scripts present, suggest HTML dir attribute value.
Sort strings using locale-aware comparison (Intl.Collator). Compare results across locales. Handle diacritics and special chars.
Generate test case templates: given/when/then format, boundary values, equivalence classes. Input feature description, output structured test cases.
Interactive code review checklist: logic, security, performance, readability, tests, documentation. Track completed items.
Plan load tests: calculate concurrent users, requests per second, ramp-up time. Generate test scenarios. k6/JMeter config hints.
Generate boundary value test cases from input constraints. Min, min+1, nominal, max-1, max. Handle multiple parameters.
Create decision tables with conditions and actions. Generate all condition combinations. Identify missing rules.
Input test cases with risk, frequency, impact scores. Calculate priority. Generate ordered test execution plan.
Build API test scenarios: endpoint, method, headers, body, expected status, response validation rules. Export as JSON.
Set performance budgets: total page weight, JS size, CSS size, image budget, font budget. Track against targets.
Generate test data: valid/invalid emails, phone numbers, dates, names, addresses. Edge cases included. Bulk CSV export.
Interactive ASCII/Unicode table: decimal, hex, octal, character, description. Filter printable, control, extended. Click to copy.
Create entity-relationship diagrams: add entities with fields/types, show as list-based visualization. Export as JSON.
Visual table schema builder: columns with name, type, constraints. Generate SQL CREATE TABLE for MySQL/PostgreSQL/SQLite.
Design MongoDB schemas. Nested objects, arrays, types. Generate JSON schema and sample documents.
Searchable Redis command reference by data type (String, List, Set, Hash, etc.). Syntax and examples.
Input table schema and queries, suggest indexes. Best practices guide.
Build connection strings for PostgreSQL, MySQL, MongoDB, Redis, SQLite. Input fields, copy URI.
Generate migration scripts: add/rename column, create table, add index. Output for raw SQL.
Generate SQL INSERT statements with realistic fake data. Define columns and types.
Generate API docs from endpoint definitions. Path, method, params, examples. Markdown output.
Define GraphQL types, fields, relationships, enums. Generate SDL.
Paste access logs, parse: top IPs, status codes, top URLs, request methods. Chart.
Build CORS configs visually. Generate Express/nginx config code.
Configure rate limiting parameters. Generate Express middleware code.
Design webhook event schemas and payloads. Generate documentation.
Design message queue topics with schemas. Generate config documentation.
Real-time frequency spectrum visualization from microphone input using Web Audio API
Connect to WebSocket URLs, send/receive messages, view message log with timestamps. Connection status indicator.
Connect to SSE endpoints, display events in real-time log. Auto-reconnect option.
Reference guide for gRPC concepts: unary, server-streaming, client-streaming, bidirectional. Proto file syntax reference.
Interactive visualization of OAuth 2.0 flows: Authorization Code, Implicit, Client Credentials, Device Code. Step-by-step diagrams.
Compare API versioning strategies: URL path, query param, header, content negotiation. Pros/cons matrix.
Paste OpenAPI/Swagger YAML or JSON, validate structure, check for common issues. Display endpoints summary.
Interactive comparison of HTTP versions: features, performance, multiplexing, header compression, QUIC. Visual diagrams.
Interactive guide for REST API naming: resources, collections, actions, query params. Validate endpoint names.
Calculate exponential backoff schedules for webhook retries. Visualize retry timing. Configure base delay, max retries, jitter.
Design API pagination: offset/limit, cursor-based, keyset. Generate response format with metadata. Best practices.
Test Accept header content negotiation logic. Input available types and Accept header, show which type wins.
Searchable database of MIME types: application/, text/, image/, audio/, video/, font/. With file extensions.
Build Cache-Control headers visually: max-age, no-cache, no-store, public/private, must-revalidate. Generate header string.
Design consistent API error responses: status codes, error codes, messages, details. Generate error handling code.
Interactive guide: synchronous (REST, gRPC) vs asynchronous (event-driven, message queue). Decision framework.
Paste full CSS and HTML to identify critical above-the-fold CSS rules and generate inline critical CSS snippets
Generate lazy loading code for images with native loading="lazy", Intersection Observer, and placeholder strategies
Generate preconnect, prefetch, preload, and prerender link tags for web performance optimization
Estimate Core Web Vitals scores from manual inputs: LCP, FID, CLS. Grade each as Good, Needs Improvement, or Poor
Compare font loading strategies and generate optimal @font-face declarations with font-display, preload, and fallback options
Generate responsive image srcset and sizes attributes with breakpoints, widths, and picture element markup
Estimate bundle sizes for common npm packages, compare alternatives, and visualize tree-shaking savings
Preview what content appears above the fold at different viewport sizes with a visual fold line indicator
Generate service worker code with cache-first, network-first, and stale-while-revalidate strategies plus offline fallback
Test viewport meta tag configurations, preview behavior at different screen sizes, and get recommended settings
Define character subsets for web fonts including Latin, Latin Extended, and custom characters. Generate unicode-range CSS
Paste script tags to categorize third-party scripts by type and estimate their loading impact on page performance
Set page weight budgets per resource type and track against targets with visual gauges and alerts
Guide for script loading with async vs defer vs module, including a decision tree, impact analysis, and code generation
Estimate Lighthouse performance score from manual metrics including FCP, LCP, TTI, TBT, CLS, and Speed Index with calculation breakdown
Enter filenames one per line, apply rename rules like prefix, suffix, and find/replace, then see preview
Paste JSON data and apply transforms like sorting keys, filtering fields, and flattening nested objects
Enter cron expressions and view the next 5 run times for each one with human-readable descriptions
Add states and transitions to build a state machine, displayed as a text-based diagram with export
Track feature flags with name, on/off status, and environment in a table view with localStorage persistence
Build notification messages with title, body, and type (info/warning/error/success) with styled preview
Reference guide of error handling patterns including retry, circuit breaker, and fallback with expandable sections
Define pipeline stages with health status (green/yellow/red) and view them as a visual status board
Build runbooks by adding titled sections with step lists and export the complete runbook as text
Generate deep link URLs: app links (Android), universal links (iOS), custom URL schemes. Generate associated domains config.
Reference chart of all popular mobile device viewports: iPhone, Samsung, Pixel, iPad. Width, height, DPR, CSS pixels.
Reference guide for mobile app permissions: iOS and Android. What each permission grants, user-friendly explanations.
Interactive reference of mobile gestures: tap, swipe, pinch, rotate, long press, 3D touch. Usage patterns, code hints.
Manage semantic versioning: major.minor.patch. Increment buttons, build number, version code calculator.
Generate project README files: title, description, installation, usage, contributing, license. Multiple styles. Copy markdown.
Write API changelogs: version, date, added/changed/deprecated/removed/fixed/security sections. Keep a Changelog format.
Generate code documentation templates: function docs, class docs, module docs. JSDoc/Python docstring/JavaDoc format.
Generate ADR (Architecture Decision Records): title, status, context, decision, consequences. Numbered and dated.
Create operational runbooks: service name, alerts, troubleshooting steps, escalation, rollback procedures.
Generate tech specs: overview, goals, non-goals, design, API changes, testing plan, rollout plan.
Guide for writing good error messages: what happened, why, how to fix. Before/after examples. Interactive analyzer.
Interactive guide to commit message conventions: Conventional Commits, Angular, custom. Generator and validator.
Build PR templates: description, type of change, checklist, testing, screenshots. Multiple presets. Copy markdown.
Build GitHub issue templates: bug report, feature request, question. Required fields, labels. Copy YAML/markdown.
Generate coding style guide sections: naming conventions, formatting, comments, file structure, best practices.
Show keyboard layouts for QWERTY, AZERTY, QWERTZ, and Dvorak with visual keyboard display
Upload CSV, pivot data by rows/columns/values. Group by, aggregate (sum/count/avg). Interactive table.
Normalize data using Min-Max, Z-score, decimal scaling, log transform. Compare original vs normalized. Download.
Reference of common I2C device addresses: sensors, displays, EEPROMs, RTCs. Conflict detection for project planning.
Pin reference for Arduino Uno/Nano/Mega: digital, analog, PWM, SPI, I2C, interrupt-capable pins. Visual pinout.
GPIO pin reference for Raspberry Pi: BCM/Board numbering, function, voltage limits. Visual pinout diagram.
Reference of SMD and through-hole component packages: sizes, footprints, comparison chart. SOT23, SOIC, QFN, etc.
Calculate subnets from IP and mask. Show network, broadcast, host range, wildcard. VLSM support. Subnet table.
Searchable database of well-known ports (0-1023) and common registered ports. Service name, protocol, description.
Calculate download/upload times from bandwidth. Convert Mbps to MB/s. Compare connection types.
Expand/compress IPv6 addresses. Validate format. Show address type (global, link-local, multicast). Prefix calculator.
Reference for WiFi channels: 2.4GHz (1-14) and 5GHz. Non-overlapping channels. Interference guide.
Reference of network diagram symbols: router, switch, firewall, server, cloud, endpoint. SVG icons with labels.
Reference table showing allowed downtime for 99% through 99.999% SLAs. Per year/month/week/day.
Calculate DNS TTL values. Convert between seconds and human-readable. Best practices by record type.
Plan home network: devices, bandwidth needs, router placement, access points. IP address allocation.
Design MQTT topic hierarchies for IoT: device/room/function naming conventions. Generate topic tree. Best practices.
Plan Home Assistant entities: device name, entity type, area, integration. Naming convention guide. YAML hints.
Generate HTML meta tags for SEO (title, description, OG tags, Twitter cards) with live preview
Preview how your page looks when shared on Facebook, Twitter, and LinkedIn
Visual builder for robots.txt with common presets and custom rules
Add URLs with priority/frequency, generate valid XML sitemap, download as file
Generate JSON-LD schema for Article, Product, FAQ, HowTo, Organization, LocalBusiness
Preview how your page appears in Google search results (desktop + mobile)
Analyze text for keyword frequency, density percentage, word count, and prominent words
Calculate Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG readability scores
Score headlines on power words, emotional words, uncommon words, length, and word balance
Build UTM-tagged URLs with all 5 parameters, generate description, and copy result
Real-time character count for Twitter, Instagram, LinkedIn, TikTok, and YouTube
Searchable reference of all HTTP status codes with descriptions and common causes
Client-side DNS lookup using DNS-over-HTTPS for A, AAAA, MX, TXT, CNAME, NS records
Estimate website carbon footprint based on page size, data transfer, and green hosting
Explain redirect types (301, 302, 307, 308) with a visual redirect chain builder/simulator
Analyze email subject lines for spam triggers, length, emoji usage, personalization, urgency words. Score 0-100.
Reference guide for all social media platform image dimensions with visual templates and quick reference cards.
Create Open Graph images with customizable title, subtitle, background gradient, and download as PNG
Paste sitemap XML to visualize URL structure as a tree diagram with stats on depths and priorities
Generate ad copy using AIDA, PAS, and BAB frameworks from product and audience details
Generate landing page copy sections: hero, features, social proof, CTA using templates. Input product details.
Preview how YouTube thumbnails will look in search results and sidebar. Upload image, add title text, see at different sizes.
Upload multiple images, arrange them in a 3-column grid to preview your Instagram feed layout. Drag to reorder.
Write long content, automatically split into tweet-sized chunks (280 chars). Number threads, add thread indicators. Copy all.
Format LinkedIn posts with line breaks, emojis, bullet points, hooks. Character counter (3000 limit). Preview formatted post.
Calculate engagement rate from views, likes, comments, shares. Compare to benchmarks. Suggest optimal posting times.
Visual weekly calendar to plan social media posts. Add posts with platform, content, time. Export as CSV.
Analyze email content for spam trigger words, ALL CAPS ratio, link ratio, image ratio, subject line quality. Score 0-100.
Input hashtags, categorize by type (brand, community, trending, niche). Calculate optimal hashtag mix. Platform-specific limits.
Generate product descriptions using AIDA, FAB, storytelling frameworks. Input product details, features, target audience. Output structured copy.
Interactive checklist to audit landing pages: headline, CTA, social proof, speed, mobile, SEO, analytics. Score 0-100.
Browse A/B test ideas by category (headlines, CTAs, forms, pricing, layout). Each with hypothesis template and expected impact.
Enter a URL, display the site's favicon at multiple sizes. Check if different sizes exist. Show how it looks in browser tabs, bookmarks.
Interactive guide for writing good alt text. Examples for different image types (decorative, informative, functional, complex). Best practices checklist.
Paste HTML, analyze heading hierarchy (h1-h6). Detect issues: skipped levels, multiple h1s, missing headings. Visual tree.
Paste HTML, find links with poor accessible text ("click here", "read more", "link"). Suggest improvements.
Interactive checklist to audit personal brand across online presence, content, network, and visibility with scoring and improvements
Framework for writing app store descriptions: features, benefits, call-to-action. Character limits. Keyword placement tips.
Analyze pricing page effectiveness: tier count, feature differentiation, CTA clarity, anchoring. Score checklist.
Calculate email metrics: open rate, click rate, conversion rate, bounce rate, unsubscribe rate. Benchmark comparison.
Calculate social media ROI: time invested, ad spend, revenue attributed. Cost per engagement, per lead.
Calculate content marketing ROI: production cost, promotion, traffic value, lead value. Break-even analysis.
Score brand names on: memorability, pronounceability, length, uniqueness, domain availability hint, trademark risk.
Generate press kit content: company overview, founder bios, product descriptions, key metrics, boilerplate. Export markdown.
CRO checklist and calculator: current conversion rate, target, traffic needed, revenue impact. A/B test duration.
Visual gradient builder with linear, radial, and conic modes, multiple color stops, angle control, and copy CSS code.
Visual box shadow builder with multiple shadows, inset option, live preview, and copy CSS.
Visual border-radius editor for all 4 corners independently, elliptical radii, live preview, and copy CSS.
Generate harmonious color palettes with complementary, triadic, analogous, and split-complementary schemes. Export as CSS variables.
Convert between HEX, RGB, HSL, HSB, and CMYK color formats with live color preview and picker.
Suggest Google Font pairings, live preview with sample text, and copy link tags.
Build CSS animations visually with keyframes, timing functions, preview, and copy code.
Generate decorative SVG wave dividers with controls for height, layers, colors, and complexity.
Create glassmorphism effects with blur, transparency, border controls, live preview, and copy CSS.
Create neumorphic UI elements with shadow controls, border radius, shape options, and copy CSS.
Generate favicons from emoji, text, or initials with background color. Download as PNG.
Calculate aspect ratios, resize dimensions maintaining ratio, with common presets like 16:9, 4:3, and more.
Convert between px, rem, and em with configurable base font size and a conversion reference table.
Visual flexbox layout builder with container and item controls, live preview, and copy CSS.
Visual CSS grid builder with rows, columns, gaps, template areas, live preview, and copy CSS.
Upload an image or pick colors and simulate how they look under different types of color blindness using color transformation matrices.
Enter a URL and preview it at different screen sizes (phone, tablet, desktop) in resizable iframes.
Check color combinations against WCAG 2.1 AA/AAA standards and get suggestions for accessible alternatives.
Simple pixel art editor with canvas grid, color palette, brush/eraser/fill tools, and PNG export
Visual editor for CSS clip-path with polygon, circle, ellipse, inset shapes and draggable control points
Enter Tailwind classes and see a live preview. Class autocomplete suggestions and copy full HTML
Visual SVG path editor with draggable control points, path commands, and SVG export
Upload an image and extract dominant colors using canvas pixel analysis with HEX/RGB palette
Pick any color, find its closest named CSS color and common color names. Show similar colors with a large named-color database.
Generate heatmap visualizations from data points on Canvas. Customizable colors, radius, intensity. Upload/input data.
Generate fancy CSS text effects: gradient text, text-shadow glow, 3D text, neon, retro, stroke, animated. Live preview, copy CSS.
Upload image, select target aspect ratio, visualize crop area, calculate dimensions. Support for common social media sizes.
Show a color, player must recreate it using RGB sliders. Score based on accuracy (delta E). Progressive difficulty.
Upload image, extract top 5-8 dominant colors using k-means clustering on canvas pixel data. Copy as HEX/RGB. Export palette.
Upload an image and add a text watermark with customizable position, opacity, font size, color, and rotation. Preview on Canvas and download.
Upload an image, select a crop area with draggable handles and preset aspect ratios. Preview and download the cropped image.
Upload an image, flip it horizontally or vertically, rotate by 90/180/270 degrees or a custom angle. Canvas-based with instant download.
Convert images to grayscale, sepia, or inverted colors. Adjust brightness and contrast using Canvas pixel manipulation.
Upload multiple images and arrange them in grid layouts (2x2, 3x3, 1+2, 2+1). Adjust spacing and background color, then download your collage.
Upload a screenshot and place it inside device mockups like a phone, laptop, or tablet. Simple Canvas-based frames with instant download.
Upload an image and adjust brightness, contrast, saturation, and hue using Canvas CSS filters. Real-time preview with instant download.
Upload an image and add customizable borders: solid color, gradient, rounded corners, and shadow effects. Canvas-based with instant download.
Simple wireframe tool with draggable components: header, button, text block, image placeholder, input field, nav bar. Canvas-based.
Browse a collection of 100+ embedded SVG icons. Search, filter by category, copy SVG code, customize size and color.
Visual button designer: padding, font, border-radius, gradient, shadow, hover effects. Live preview, copy CSS.
Design card UI components: image, title, body, footer, shadow, border, rounded corners. Live preview, copy HTML+CSS.
Build HTML forms: add text inputs, email, password, select, checkbox, radio, textarea. Generate HTML with styling.
Style HTML tables: striped rows, hover effects, responsive, borders, header colors. Live preview, copy HTML+CSS.
Build nav bars: horizontal/vertical, logo, menu items, dropdown, hamburger mobile. Copy HTML+CSS.
Build website footers: columns, links, social icons, newsletter, copyright. Multiple layouts. Copy HTML+CSS.
Create pricing tables with tiers: name, price, features, CTA button, highlight recommended. Copy HTML+CSS.
Design testimonial cards: quote, author name, title, avatar placeholder, rating stars. Copy HTML+CSS.
Build hero sections: headline, subtext, CTA buttons, background gradient/image placeholder. Copy HTML+CSS.
Generate breadcrumb navigation: add path items, separator styles (/, >, arrow), Schema.org markup. Copy HTML.
Create CSS tooltips: position (top/right/bottom/left), arrow, animation, custom content. Pure CSS. Copy code.
Build modal dialogs: header, body, footer, close button, overlay, animation. Copy HTML+CSS+JS.
Create skeleton loading screens for different content types: cards, lists, profiles, articles. Animated pulse. Copy CSS.
Preview responsive grid layouts at different breakpoints. Define columns for sm/md/lg/xl. Live resize demonstration.
Create CSS custom property themes: colors, spacing, typography, borders. Light/dark mode switch. Copy :root variables.
Generate decorative audio waveform visualizations on Canvas with export to PNG
Mix colors visually: add colors in proportions, see resulting mix. Complementary color suggestions and hex code export.
Generate app icons from text, emoji, or initials with background color/gradient, rounded corners. Download at all iOS/Android sizes.
Create app store screenshot mockups with device frames (iPhone/Android), headline text, background color. Canvas-based. Download PNG.
Preview push notifications as they appear on iOS/Android. Input title, body, app name, icon. Visual mockup.
Generate splash screens with background color/gradient, centered logo/text. Download at all iOS/Android sizes.
Curated color palettes for mobile apps: Material Design, iOS, flat colors. Copy color codes. Light/dark pairs.
Calculate print dimensions with bleed, trim size, and safe area for professional printing
Recommended font sizes for different print contexts with line height and readability guidelines
CMYK vs RGB vs Pantone reference with color gamut differences and print-safe color picking
Reference chart for poster, banner, and print sizes with pixel dimensions at various DPI settings
Design business cards with name, title, contact info, multiple layouts, and print-ready canvas preview
Guide to zine folding patterns with 8-page and 16-page layouts, page order diagrams, and printable templates
Pick wall colors and visualize on a simple room mockup. Canvas-drawn room with different color combinations.
Interactive guide to composition rules: rule of thirds, golden ratio, leading lines, framing, symmetry. Canvas overlay examples.
Interactive color wheel showing harmony types: complementary, triadic, tetradic, analogous, split-complementary. Canvas wheel.
Reference for brush sizes: watercolor, oil, acrylic. Sizing systems. Brush type recommendations by technique.
Color mixing reference: primary to secondary to tertiary. Complementary mixing. Warm/cool palette guide.
Generate typographic scales: minor third, major third, perfect fourth, golden ratio. Show heading/body sizes. CSS output.
Generate portfolio grid layouts: masonry, grid, filmstrip. Configure columns, spacing. Preview with placeholder images.
Generate 1-point, 2-point, 3-point perspective grids on Canvas. Adjustable vanishing points. Download as PNG.
Mix hair color shades visually. Show resulting color from base + toner. Color theory for hair.
Browse nail polish colors by shade family. Click to see color. Suggest complementary shades. Copy hex.
Seasonal color palettes: spring, summer, autumn, winter. Warm vs cool tones. Color combination suggestions.
Determine personal color season from skin tone, hair, and eye color inputs. Best colors for each season.
Preview repeating patterns on a wall: stripe, damask, geometric. Color customization. Canvas rendering.
Mix miniature paints: input two colors, see resulting blend. Common ratios. Thinning guide. Paint brand references.
Create professional invoices with line items, tax, discounts, company info. Generate downloadable PDF via browser print.
Generate receipts with items, tax, total, business info. Print-friendly layout.
Generate GDPR/CCPA compliant privacy policies based on your business details, data types collected, and third parties.
Generate Terms of Service based on business type, refund policy, liability, and more.
Generate cookie policies with categories (essential, analytics, marketing), consent info.
Generate creative business names based on industry, keywords, and style (modern, classic, tech).
Create HTML email signatures with name, title, company, phone, social links. Live preview and copy HTML.
Generate QR codes for URLs, text, WiFi, vCard, email. Download as PNG/SVG. Color customization.
Calculate return on investment with initial cost, revenue, time period, and visualize with chart.
Calculate break-even point with fixed costs, variable costs, price per unit, and show chart.
Calculate gross, net, and operating margins from cost and revenue inputs.
Calculate real-time cost of meetings based on number of attendees, average salary, and duration.
Convert between hourly, daily, weekly, monthly, yearly salary with tax estimates.
Calculate monthly payments, total interest, and amortization schedule with chart.
Calculate tip amounts, split bills between people, and suggest tip percentages.
Calculate your ideal hourly or project rate based on desired salary, expenses, billable hours, taxes, and profit margin.
Calculate MRR, ARR, churn, LTV, CAC, LTV:CAC ratio, and payback period from your SaaS inputs.
Calculate optimal SaaS pricing tiers based on value metrics, competitor analysis, and willingness-to-pay
Calculate startup runway from burn rate, revenue, growth rate, and cash on hand with visual chart
Calculate equity dilution through funding rounds with pie chart visualization and cap table
Calculate ACV, TCV, and net revenue from SaaS contract terms with detailed breakdown
Paste job description + resume, compare keyword overlap, suggest missing keywords, ATS compatibility score.
Generate pitch deck outline based on startup type, market, traction. Slide-by-slide structure with content suggestions.
Interactive checklist for Product Hunt launches: pre-launch, launch day, post-launch. Tips and best practices.
Calculate monthly mortgage payments with principal, interest rate, term. Show amortization chart. Include property tax and insurance estimates.
Calculate retirement savings needed based on age, current savings, annual contribution, expected return rate, retirement age, lifestyle. Show growth chart.
Add multiple debts (name, balance, rate, min payment). Calculate payoff using Snowball or Avalanche method. Show timeline and total interest saved.
US federal tax bracket calculator for 2024. Input income and filing status. Show effective vs marginal rate, tax owed per bracket.
Generate sequential or random invoice numbers with custom prefixes, dates, patterns. Track last number in localStorage.
Calculate LTV using multiple models: simple, traditional, cohort-based. Input ARPU, churn, margin. Show projections.
Compare pricing strategies: cost-plus, value-based, competitor-based. Input costs, perceived value, competitor prices.
Calculate fair influencer pricing based on followers, engagement rate, platform, content type. ROI estimate.
Generate Non-Disclosure Agreements. Input parties, purpose, duration, jurisdiction. Output formatted NDA document. Print-friendly.
Interactive GDPR compliance checklist with categories: data collection, consent, rights, security, breach, DPO. Progress tracker.
Build cookie consent banners with customizable text, buttons, colors, position. Generate HTML/CSS/JS code.
Generate DMCA takedown notice with required fields: claimant, original work, infringing URL, good faith statement.
Generate refund policies for digital products, physical goods, SaaS subscriptions. Customizable terms.
Searchable library of common contract clauses: indemnification, force majeure, IP assignment, non-compete, limitation of liability.
Build competitive analysis matrices: features vs competitors. Rate strength (1-5). Visualize gaps.
Create user personas with demographics, goals, pain points, behaviors. Generate persona cards. Save to localStorage.
Generate project charters with scope, objectives, stakeholders, timeline, risks, success criteria. Print-friendly.
Calculate API costs for AI services. Input tokens/requests, select model, see estimated costs. Compare pricing across providers.
Estimate shipping costs based on weight, dimensions, distance zones. Compare USPS/UPS/FedEx rate tiers (approximate).
Generate SKU codes from product attributes (category, color, size, variant). Configurable format rules. Bulk generation.
Build simple P&L statements. Revenue, COGS, operating expenses, net income. Monthly/quarterly view. Print-friendly.
Estimate startup valuation using multiple methods: revenue multiple, Berkus, scorecard, DCF simplified. Compare results.
Manage capitalization table with founders, investors, option pool. Calculate ownership percentages. Pie chart visualization.
Score pitch decks on 12 key slides: problem, solution, market, business model, traction, team, etc. Generate improvement tips.
Map customer journey stages: awareness, consideration, decision, retention, advocacy. Add touchpoints, emotions, actions per stage.
Create Lean Canvas business model with 9 blocks: problem, solution, key metrics, unique value, channels, etc. Save/export.
Track competitor pricing across tiers. Side-by-side comparison table. Feature matrix. Save to localStorage.
Calculate churn metrics: monthly/annual churn, revenue churn, net revenue retention. Input cohort data, visualize trends.
Calculate token vesting schedules with cliff, linear vesting, monthly unlocks. Timeline visualization with Canvas.
Compare renting vs buying: input rent, home price, down payment, interest rate, taxes, maintenance. Show breakeven timeline with chart.
Calculate rental property ROI: purchase price, rental income, expenses, appreciation. Show cash-on-cash return, cap rate.
Generate full amortization schedule for loans. Monthly principal, interest, balance. Interactive table + chart.
Calculate how long to save for a down payment based on monthly savings, target amount, interest rate. Milestone markers.
Calculate agent commissions from sale price, commission percentage, split between buyer/seller agents.
Design portfolio allocations: stocks, bonds, real estate, crypto, cash. Pie chart visualization. Risk level assessment.
Financial Independence / Retire Early calculator. Input expenses, savings rate, investments, returns. Show target number and timeline.
Calculate needed emergency fund based on monthly expenses, income stability, dependents. Show 3/6/12 month targets.
Calculate net worth from assets (cash, investments, property, vehicles) minus liabilities (loans, credit cards). Track over time.
Track investments for tax loss harvesting. Log gains/losses, calculate net tax benefit, wash sale reminders.
Monthly budget planner with income, expenses, pie chart breakdown and localStorage
Split expenses among a group, calculate who owes whom, and simplify debts
Track recurring subscriptions with costs, billing dates, and cancel reminders
Build freelance contracts with scope, deliverables, payment terms, IP rights, revisions policy. Generate printable document.
Generate SOW documents: project overview, deliverables, timeline, milestones, assumptions, constraints.
Interactive client onboarding checklist: contracts, access, tools setup, kickoff, communication channels. Customizable.
Build business proposals: executive summary, approach, timeline, pricing, team, terms. Print-friendly.
Log time entries (date, hours, description, rate), auto-calculate totals, generate invoiceable summary. localStorage.
Create professional rate cards with services, hourly/project rates, packages. Multiple currencies. Print-friendly.
Calculate negotiation range from market data inputs with BATNA analysis, anchor pricing strategy, and talking points generator
Build elevator pitches with who you are, what you do, unique value, and call to action sections with 30/60/90 second timer
Compare job offers side-by-side with salary, benefits, equity, PTO, remote policy, and culture with weighted scoring
Complete reference of currency symbols, ISO codes, and countries. Search by name, symbol, or code.
Plan travel budget: flights, accommodation, food, transport, activities, insurance. Daily and total estimates.
Generate data retention policies by data type: customer data, logs, backups, financial records. Configurable periods.
Compare compliance frameworks: SOC 2, ISO 27001, GDPR, HIPAA, PCI-DSS. Requirements matrix, overlap analysis.
Build BCP: critical functions, RPO/RTO targets, recovery strategies, communication plan, testing schedule.
Generate crisis communication templates for initial response, updates, and resolution with internal and external versions and tone guidance
Build customer satisfaction surveys with NPS, CSAT, CES questions, Likert scales, open-ended questions, form preview, and HTML export
Plan wedding budget: venue, catering, photography, flowers, dress, rings, etc. Track spent vs budget. Pie chart.
Track gift budgets by person/occasion. Total spent, remaining budget. Holiday gift planning. localStorage.
Simple dashboard: income, expenses by category, savings rate, net worth trend. Monthly view. localStorage. Canvas charts.
Calculate SLA uptime percentage from total time and downtime, showing allowed downtime per period
Input current load, growth rate, and max capacity to calculate months until capacity is reached with a chart
IAP pricing reference across App Store tiers. Currency conversion for all regions. Revenue after commission.
Design analytics dashboard layouts: DAU, MAU, retention, session length, revenue. KPI cards template.
Generate Standard Operating Procedure documents: purpose, scope, responsibilities, procedure steps, revision history.
Create SWOT analysis diagrams with 4 quadrants. Color-coded. Add items per quadrant. Export.
Track MRR growth: new, expansion, contraction, churn. Calculate net new MRR. Growth rate. Monthly trend chart.
Build retention cohort tables. Input cohort sizes and retention by period. Heatmap coloring. Average retention curve.
Calculate unit economics: LTV, CAC, LTV:CAC, payback period, gross margin. Health indicators.
Model funding rounds: pre/post money valuation, shares issued, dilution impact. Visual cap table.
Calculate Total/Serviceable/Obtainable market sizes. Top-down and bottom-up approaches. Nested circles visualization.
Build acquisition funnels: visitors to customers. Conversion rates per stage. Drop-off analysis. Visual funnel.
Forecast revenue: linear growth, exponential, seasonal. Historical data input. 12-month projection chart.
Sean Ellis PMF survey: how disappointed if product gone. Score calculator. Benchmark comparison.
Track monthly burn rate, revenue, net burn. Runway calculation. Visual chart. Scenario modeling.
Generate investor update emails: metrics, highlights, asks, runway. Professional format. Copy markdown.
Pipeline stage tracking with deal values, win probabilities. Weighted pipeline value. Stage conversion rates.
Calculate affiliate commissions: one-time vs recurring, tier structures, multi-level. Payout projections.
Calculate subscription box economics: COGS per box, shipping, fulfillment, margin per subscriber. Break-even.
Estimate solar panel savings based on system size, electricity cost, sun hours, and regional data
Compare EV vs gas car costs including purchase, fuel, maintenance, and insurance with break-even analysis
Calculate cost to offset carbon from flights, driving, and home energy with market prices and verified providers
Calculate self-publishing costs including editing, cover design, formatting, printing, and distribution
ISBN format guide with ISBN-10 vs ISBN-13 structure, check digit calculator, and barcode format info
Generate freelance agreements with customizable clauses: scope, payment, IP, confidentiality, termination. Print-ready.
Generate software/content licensing agreements: exclusive/non-exclusive, territory, duration, royalties. Print-ready.
Generate partnership agreements: roles, profit sharing, decision making, dispute resolution, exit clauses.
Generate job offer letters with salary, benefits, start date, conditions, at-will employment. Professional format.
Generate cease and desist letters for IP infringement, harassment, breach of contract. Professional legal tone.
Generate consent forms: photography/video release, medical consent, research participation, data processing. GDPR-aware.
Generate liability waivers for events, sports, activities. Assumption of risk, indemnification clauses.
Build SLAs with uptime guarantees, response times, penalties, exclusions, measurement methodology.
Generate DPA for GDPR compliance: data controller/processor roles, purposes, security measures, sub-processors.
Generate IP assignment agreements: works made for hire, invention assignment, moral rights waiver.
Generate non-compete agreements with geographic scope, duration, industry restrictions, consideration.
Generate basic lease agreements: residential/commercial, term, rent, deposits, maintenance responsibilities.
Generate subcontractor agreements: scope, payment, insurance requirements, indemnification, work standards.
Generate MOU templates: parties, purpose, responsibilities, timeline, termination, non-binding clause.
Generate disclaimers: website, professional advice, affiliate, earnings, health/fitness, financial. Multiple types.
Calculate growth rates: CAGR, month-over-month, year-over-year. From start/end values and periods. Chart projection.
Allocate marketing budget across channels: SEO, PPC, social, content, email, events. Pie chart. ROI per channel.
Design lead scoring models: demographic + behavioral criteria. Weight factors. Score thresholds for MQL/SQL.
Calculate viral coefficient (K-factor): invites sent per user, conversion rate. Growth projection if K > 1.
Define customer segments: demographics, behaviors, needs. RFM analysis (Recency, Frequency, Monetary). Segment profiles.
Multi-competitor SWOT analysis. Side-by-side comparison. Identify competitive advantages. Export.
Design referral programs: incentive type (credit/discount/cash), tiers, terms. Calculate viral impact. Policy generator.
Build market research surveys: target market, product-market fit, pricing sensitivity, competitive preference questions.
Calculate monthly lease payments: MSRP, residual, money factor, down payment, trade-in. Total cost analysis.
Plan road trip costs: fuel, tolls, food, lodging per day. Multiple stops. Total budget estimate.
Calculate monthly car payments: loan amount, interest rate, term. Amortization schedule. Total interest paid.
Compare insurance quotes: coverage types, deductibles, premiums. Annual cost comparison table.
Track charitable donations: amount, organization, date, tax deductible. Annual summary. localStorage.
Build community surveys: satisfaction, improvement priorities, feedback. Multiple question types. Export HTML.
Pricing guide for common garage sale items by category and condition. Price calculator with condition multiplier.
Calculate art pricing: size, medium, time spent, material cost, hourly rate, complexity. Compare pricing strategies.
Generate art commission quotes: description, size, complexity, timeline, revisions, pricing. Professional format.
Track art supply expenses by category: paints, brushes, paper, canvas, tools. Monthly totals. Budget. localStorage.
Compare wedding venues side-by-side with capacity, cost, amenities, location, and availability. Scoring matrix for easy decisions.
Calculate gross and net rental yield from property price, monthly rent, and expenses. Compare multiple properties side by side.
Calculate how much home you can afford based on income, debts, down payment, and interest rate. Includes DTI ratio check.
Plan renovation budgets by room: kitchen, bathroom, bedroom, and more. Track estimates vs actual costs with localStorage persistence.
Track rental property expenses: mortgage, insurance, maintenance, management, and taxes. Monthly profit and loss with localStorage persistence.
Generate tenant reference check questionnaires covering rental history, payment reliability, property care, and noise complaints.
Calculate lease renewal rent with current rent, market rate, CPI adjustment, and vacancy cost analysis. Determine the optimal negotiation range.
Compare properties side by side on price, size, location, schools, commute, and features with weighted scoring.
Plan IT budgets: hardware, software, cloud, personnel, training, maintenance. Monthly/annual breakdown. Canvas chart.
Student budget: tuition, housing, food, books, transportation, personal. Income sources. Monthly balance. localStorage.
Track pet expenses: food, vet, grooming, toys, insurance. Monthly totals. Budget. Canvas chart. localStorage.
Generate tax-deductible donation receipts: donor name, amount, date, organization, EIN, purpose. Print-ready.
Generate nonprofit impact reports: mission, key metrics, stories, financials, future plans. Print-ready format.
Design membership tiers: benefits, pricing, naming. Side-by-side comparison table. Revenue projections.
Generate nonprofit annual report sections: letter from director, year in review, financials, donors, looking ahead.
Build program-specific budgets: personnel, supplies, travel, contracted services. Direct vs indirect costs.
Model social enterprise revenue: earned income, grants, donations, sponsorships. Sustainability ratio.
Generate job descriptions: title, department, responsibilities, qualifications, benefits. Multiple templates by role type.
Compare compensation packages: base salary, bonus, equity, benefits value. Total comp calculator.
Build engagement surveys: satisfaction, alignment, growth, management, culture questions. Score calculator.
Track diversity metrics: gender, ethnicity, age, department distribution. Visual charts. Goal tracking.
Calculate recording studio costs: hourly rate, setup time, tracking, mixing, mastering hours. Package pricing.
Generate contractor job estimates: labor, materials, equipment, overhead, profit margin. Professional format. Print-ready.
Plan retirement income: Social Security, pension, 401k withdrawals, other. Monthly/annual budget. Gap analysis.
Design energy monitoring dashboard: circuits to monitor, alert thresholds, daily/weekly/monthly views. KPI cards.
Real-time word, character, sentence, paragraph count with reading time and word frequency analysis
Generate lorem ipsum placeholder text in paragraphs, sentences, or words with HTML output option
Convert text between UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and more
Remove duplicate lines from text with options for case sensitivity, whitespace trimming, and sorting
Convert text to URL-friendly slugs, handles special characters, unicode, and multiple separator options
Generate random strings with custom length, character sets, and bulk generation support
Advanced find and replace with regex support, case sensitivity, whole word matching, and preview
Detect and highlight invisible/zero-width characters in text including ZWS, ZWSP, ZWNJ, BOM, and more
Search Unicode characters by name or code point, view character details, and copy characters
Convert text to binary, hexadecimal, and octal representations and back
Translate text to Morse code and back with audio playback using Web Audio API
Generate text in various Unicode styles including bold, italic, script, monospace, circled, squared, and more
String length, reverse, trim, repeat, pad, split and more operations in one tool
Escape and unescape strings for JSON, handling special characters and Unicode
Convert numbers to English words with support for large numbers, decimals, and ordinals
Generate citations in APA, MLA, Chicago, Harvard formats. Input author, title, year, publisher, URL. Copy formatted citation.
Compare two texts for similarity using Jaccard similarity, n-gram comparison, cosine similarity of word vectors. Show percentage and highlighted overlapping passages.
Compare original and paraphrased text. Check word overlap, structural similarity, vocabulary diversity score.
Enter a word, find rhyming words using phonetic patterns. Sort by syllables, perfect vs near rhymes. Built-in rhyme database.
Generate structured essay outlines (5-paragraph, argumentative, compare/contrast, persuasive). Input topic and thesis.
Searchable reference of English grammar rules with examples: comma usage, semicolons, apostrophes, commonly confused words.
Scramble words for the player to unscramble. Timer, hints, difficulty levels. Built-in word bank.
Search emojis by name/keyword, browse by category. Click to copy. Show Unicode code point, shortcode. Recent picks.
Paste resume text to extract and categorize skills into technical, soft, tools, languages, and certifications with tag cloud visualization
Generate cover letter frameworks with opening hook, value proposition, company alignment, and closing sections
Templates for LinkedIn connection requests by context: recruiter, peer, mentor, customer with personalization fields
Generate professional bios in multiple lengths (50, 100, 200 words) from input fields for name, role, expertise, and achievements
Generate professional thank you notes for interviews, referrals, mentorship, and clients with multiple templates
Draw boxes/tables using Unicode box-drawing characters. Input rows/columns, header, content. Copy text output.
Build email templates for welcome, follow-up, newsletter, cold outreach, and support with personalization fields and copy support
Generate press releases with headline, dateline, lead paragraph, body, boilerplate, and contact info in AP style format
Generate cold email frameworks using AIDA, PAS, BAB, and QVC formulas with prospect details, pain points, and multiple variations
Generate OOO email messages for vacation, sick, parental leave, and sabbatical in professional and casual styles with return dates
Templates for responding on social media to complaints, praise, questions, and negative reviews with professional tone and platform-specific formatting
Generate announcements for product launch, feature update, company news, and policy change with internal and external versions
Find all valid anagrams of input letters. Filter by length. Built-in word list.
Templates for responding to app reviews: 1-star complaints, feature requests, praise, bug reports. Professional tone.
Generate KB article templates: problem, solution, steps, related articles, tags. Multiple formats: how-to, troubleshooting, FAQ.
Generate technical blog post outlines: title, hook, problem statement, solution, code examples, conclusion. SEO tips.
Translate English to Pig Latin and back with support for consonant clusters, uppercase, and punctuation
Convert text to NATO phonetic alphabet and back with quick lookup reference table
Convert text to Braille Unicode characters and back with dot patterns and reference chart
Show flag semaphore positions for each letter using stick figure SVG diagrams and spell out messages
Detect the language of input text using common word frequency analysis for 10+ languages with confidence scores
Convert text to leet speak (1337) with multiple intensity levels and decode back
Reverse text, words, or individual words with multiple modes including Unicode mirror text
Convert text to Wingdings-style Unicode symbols and back with character mapping
Interactive IPA (International Phonetic Alphabet) chart with descriptions grouped by consonants and vowels
Check if text is a palindrome, show visualization, and generate palindromes from input
Format manuscript text to industry standards with double-spacing, proper margins, and word/page count estimates
Visual reference of standard proofreading marks with symbols, meanings, and usage examples
Generate community guidelines for online spaces: behavior rules, moderation policies, consequences. Customizable sections.
Generate neighborhood/community newsletter: events, announcements, safety tips, contacts. Print-ready.
Generate geocache log entries with found date, location hint, difficulty, terrain, and description. Includes TFTC template.
Generate invitation wording for weddings, birthdays, baby showers, housewarmings, and graduations in formal or casual tone.
Generate personalized thank you card messages for weddings, birthdays, baby showers, sympathy, and business occasions.
Reference of dialogue tag alternatives to "said": by emotion (angry, sad, happy, nervous). Usage examples.
Reference of genre conventions: romance, mystery, fantasy, sci-fi, thriller, horror. Tropes, structure, reader expectations.
Framework for writing book blurbs: hook, setup, conflict, stakes, tone. By genre. Word count target.
Generate query letter frameworks: hook, synopsis, bio, comp titles. Agent submission format. Word count guide.
Compare APA 7, MLA 9, Chicago, Harvard citation formats side by side for the same source. Quick reference.
Help craft thesis statements: topic, claim, evidence, significance. Argumentative vs analytical vs expository.
Generate personalized donor thank you letters: first-time, recurring, major gift, in-kind, corporate. Multiple tones.
Lyric writing workspace with syllable counter per line, rhyme scheme tracker (ABAB, etc.), and verse/chorus structure.
Templates for legacy/ethical will letters: values, life lessons, wishes, memories. To children, grandchildren, community.
Conjugate common Spanish verbs in present, past, future, conditional tenses. Regular and common irregular verbs. 20+ verbs.
Common French phrases by category: greetings, restaurant, shopping, directions, emergencies. Pronunciation hints.
German grammatical cases reference: nominative, accusative, dative, genitive. Article tables. Preposition guide.
Italian food and restaurant vocabulary: ingredients, dishes, ordering phrases. Menu reading guide.
Interactive Hangul consonant and vowel chart. Syllable block builder. Basic word examples. Click to see stroke order.
Side-by-side Portuguese/Spanish comparison: false friends, pronunciation differences, grammar variations.
Arabic alphabet chart: initial, medial, final forms. Letter names. Pronunciation guide. Number system.
Conversation starters by level (beginner/intermediate/advanced) and topic. For language exchange sessions.
Reference of English-Spanish, English-French, English-German cognates. True and false cognates. 100+ per language pair.
Calculate percentage of, percentage change, percentage difference, increase/decrease. Multiple calculation modes.
Full scientific calculator with trig functions, logarithms, exponents, constants, memory, and history.
Add, subtract, multiply matrices, calculate determinant, transpose, inverse. Support 2x2, 3x3, 4x4.
Calculate mean, median, mode, range, variance, standard deviation, quartiles from a dataset.
Calculate population and sample standard deviation with step-by-step breakdown.
Calculate Pearson correlation coefficient between two datasets with scatter plot visualization.
Calculate required sample size for surveys given confidence level, margin of error, population size.
Statistical significance calculator for A/B tests with conversion rates, sample sizes, confidence.
Calculate compound interest with regular contributions, chart showing growth over time.
Comprehensive unit converter: length, weight, temperature, speed, area, volume, data, time, energy.
Convert time between time zones, show current time in multiple zones, DST awareness.
Calculate exact age in years/months/days, next birthday countdown, day of week born.
Calculate days, weeks, months, years between two dates, include/exclude weekends.
Calculate BMI from height/weight (metric/imperial), show category, healthy weight range.
Calculate daily calorie needs using Harris-Benedict/Mifflin-St Jeor equations, activity level adjustment.
Calculate GPA from courses with grade and credit hours. Support 4.0 and weighted scales. Semester and cumulative.
Interactive periodic table with element details: atomic number, mass, symbol, group, electron config. Color-coded categories.
Interactive unit circle showing sine, cosine, tangent values for common angles. Click angle to see values. Visual display with Canvas.
Perform arithmetic operations (+, -, *, /) in binary, hex, or decimal. Show step-by-step conversion between bases.
Searchable physics formula reference: kinematics, forces, energy, electricity, waves, thermodynamics. With units and variable descriptions.
Input chemical equation (e.g. H2 + O2 -> H2O), automatically balance it. Show coefficients and step-by-step.
Calculate conversion rates between funnel stages. Input visitors, leads, trials, customers. Show drop-off percentages and chart.
Calculate Net Promoter Score from survey responses. Input promoters, passives, detractors counts. Show score and benchmark comparison.
Calculate uptime percentage from downtime. Show annual/monthly/weekly allowed downtime for 99%, 99.9%, 99.99%, 99.999% SLAs.
Input a Sudoku puzzle, solve it using backtracking algorithm. Step-by-step solving option. Generate random puzzles.
Timed math quiz: addition, subtraction, multiplication, division. Difficulty levels. Track score, streak, accuracy.
Calculate daily macronutrient needs based on weight, height, activity level, and fitness goal
Calculate your one-rep max from reps and weight using Epley, Brzycki, and Lombardi formulas
Estimate body fat percentage using the U.S. Navy method with visual category indicator
Calculate Total Daily Energy Expenditure using multiple formulas with BMR breakdown
Calculate estimated due date from last menstrual period or conception date with trimester timeline
Classify blood pressure readings according to AHA guidelines with health recommendations
Calculate daily water intake needs based on weight, activity, climate, and health factors
Plan daily step goals, calculate calories burned and distance. Weekly and monthly goal tracking
Calculate precision, recall, F1 score, accuracy from TP/FP/TN/FN inputs. Visual confusion matrix. ROC interpretation.
Input feature names and importance scores, visualize as horizontal bar chart. Sort, compare, export.
Input numerical data, show histogram, box plot, normal curve overlay. Calculate skewness, kurtosis.
Calculate cosine similarity, Euclidean distance, Manhattan distance between two vectors. Input as comma-separated numbers.
Ethereum gas fee calculator. Input gas limit and gas price (Gwei), calculate total fee in ETH and approximate USD. Show fast/average/slow estimates.
Calculate profit/loss from crypto trades. Input buy price, sell price, amount, fees. Show ROI percentage and net profit.
Calculate DeFi yields: APR to APY conversion, impermanent loss calculator, compound frequency comparison chart.
Calculate transfer times for file sizes at different bandwidths. Compare speeds. Convert between Mbps, MB/s, Gbps.
Calculate DCA results: regular investment amount, frequency, price variations. Show average cost vs lump sum comparison.
Calculate position size based on account size, risk percentage, entry price, stop loss. Show shares to buy and risk amount.
Calculate call/put option profit/loss at expiration. Input strike, premium, shares. Breakeven price. Simple payoff chart.
Calculate dividend yield, annual income, DRIP growth projections. Input stock price, dividend per share, growth rate.
Calculate current yield, yield to maturity, bond price from coupon rate, face value, market price, years to maturity.
Calculate defect density (defects per KLOC), defect removal efficiency, test coverage percentage. Compare against benchmarks.
Calculate frequency of any musical note with A4=440Hz reference, overtones, and equal temperament table
Calculate resistor value from color bands (4 and 5 band). Visual resistor with colored bands. Reverse lookup: value to colors.
Calculate voltage, current, resistance, power from any two inputs. Visual triangle diagram. Common formulas reference.
Calculate current-limiting resistor for LEDs: supply voltage, LED forward voltage, current. Series/parallel configurations.
Perform arithmetic on binary numbers: add, subtract, AND, OR, XOR, NOT, shift left/right. Show step-by-step. Bit visualization.
Calculate dB from power/voltage ratios. Add dB values. Reference chart: conversation=60dB, jet=140dB, etc.
Calculate capacitor values from markings (3-digit code, EIA). Series and parallel capacitance. RC time constant calculator.
Simplify boolean expressions using laws (De Morgan, distribution, etc.). Truth table generation. Show step-by-step simplification.
Convert between decimal, binary, octal, hexadecimal with IEEE 754 float representation. Show bit layout.
Calculate SNR from signal and noise power. Convert dB. Shannon capacity theorem. Link budget calculator.
Calculate PCB trace width for given current, copper weight, temperature rise using IPC-2221 formulas.
Convert between Cartesian, polar, cylindrical, spherical coordinates. Visual 2D plot on Canvas.
Simulate logic gates: AND, OR, NOT, NAND, NOR, XOR, XNOR. Chain inputs/outputs. Truth table. Visual gate diagrams.
Convert between standard and scientific notation. Significant figures calculator. Engineering notation (10^3 steps).
Calculate distance between two points using Haversine formula. Input lat/long coordinates. Show in km/miles. Great circle distance.
Estimate flight time between locations based on distance and average air speed. Include layover calculations.
Calculate heat index, wind chill, feels-like temperature from actual temp, humidity, wind speed. Comfort category.
Calculate sunrise, sunset, golden hour, blue hour for any date and location using astronomical formulas.
Calculate paint needed for any room: dimensions, doors/windows to exclude, number of coats. Results in gallons and liters with cost estimate.
Calculate tiles needed for floor or wall: area dimensions, tile size, grout width, and wastage percentage. Shows boxes needed.
Calculate wallpaper rolls needed: wall dimensions, pattern repeat, doors/windows exclusions, and wastage allowance.
Calculate concrete volume for slabs, cylinders, and walls. Input dimensions and get results in cubic yards, cubic meters, and bag counts.
Calculate board feet from dimensions. Cut list optimizer with common lumber sizes reference.
Calculate stitches and rows needed from gauge swatch measurements. Resize patterns for different gauges.
Calculate electricity cost for appliances: wattage, hours of use, and rate. Compare appliances with daily, monthly, and yearly costs.
Calculate room area for irregular shapes: L-shaped, T-shaped, circular, and triangular rooms. Break complex rooms into simple rectangles.
Calculate pet age in human years for dogs (by size: small/medium/large) and cats. Show life stage.
Calculate current pregnancy week from LMP or due date. Show milestones, trimester, development stage.
Predict adult height from parents' heights using Khamis-Roche method. Show growth percentile.
Calculate exposure triangle: aperture, shutter speed, ISO. EV calculator. Sunny 16 rule reference.
Calculate delay/reverb times based on BPM: 1/4 note, 1/8, 1/16, dotted, triplet. In ms and Hz.
Calculate number of concrete blocks for a wall: height, length, block size, mortar joints.
Calculate yarn needed for knitting/crochet projects: gauge, dimensions, yarn weight. Yardage estimate.
Calculate number of plants for an area based on spacing. Row planting or grid/triangle patterns.
Calculate gear ratios from chainring and cog teeth counts. Speed at cadence. Gear inches. Comparison table.
Calculate pool volume for rectangular, oval, kidney shapes. Gallons/liters. Chemical dosing guide.
Calculate carpet needed for rooms including waste factor. Multiple rooms, stairs. Cost estimate.
Calculate fence posts needed: total length, post spacing, corners. Rails and boards count.
Calculate finished size from stitch count and fabric count (Aida 14, 16, 18). Thread/floss requirements.
Scale pizza dough recipe: flour, water, salt, yeast, oil based on number of pizzas and size. Baker's percentages.
Calculate wax weight for container size. Fragrance oil percentage. Wick size guide. Pour temperature.
Calculate lye and oil amounts for cold process soap. Saponification values for common oils. Superfat percentage.
Estimate print cost from filament usage, electricity, time, wear. Cost per gram for different materials.
Calculate solar panel needs: daily kWh usage, sun hours, panel wattage, system losses. ROI estimate.
Upload or paste CSV, select column, compute min/max/mean/median/mode/stdev/sum/count. Histogram visualization.
Paste numerical data, detect outliers using IQR method and Z-score method. Highlight outliers. Box plot visualization.
Calculate simple, exponential, and weighted moving averages from data series. Canvas line chart with overlays.
Fit linear, polynomial (2nd/3rd order), exponential trend lines to data. Show equation and R-squared. Canvas chart.
Create frequency distribution tables from data. Class intervals, relative/cumulative frequency. Ogive chart.
Chi-square test for independence. Input observed frequencies in a table. Expected frequencies, chi-square, p-value, degrees of freedom.
One-sample and two-sample t-tests. Input sample data. Calculate t-statistic, p-value, confidence interval. Interpret results.
One-way ANOVA. Input multiple groups of data. F-statistic, p-value, ANOVA table. Post-hoc interpretation.
Calculate probability: combinations, permutations, binomial, normal distribution (z-table lookup), Bayes theorem.
Interactive Z-score table. Look up z-value to probability. Reverse lookup. Visual normal curve with shaded area on Canvas.
Simple and multiple linear regression. Input X,Y data pairs. Slope, intercept, R-squared, prediction. Canvas scatter plot.
Guess the pattern and find the missing number in sequences with multiple difficulty levels
Generate math puzzles including missing operators, equation balancing, and magic squares
Place N queens on an NxN chessboard so none attack each other, with validation and solutions
Fill a grid with 0s and 1s following rules: no three consecutive same digits, equal counts per row and column
Generate and solve simple 4x4 KenKen puzzles with cages and arithmetic operations
Practice mental math with timed rounds, increasing difficulty, and performance statistics
Calculate pace, speed, and finish time from any two values with split tables for common race distances
Predict race times from a known result using the Riegel formula for common race distances
Calculate heart rate training zones using max HR or Karvonen method with zone descriptions
Calculate plates needed on each side of a barbell with visual display in kg and lb
Calculate swimming pace per 100m or 100yd with split times for common pool and open water distances
Estimate cycling power from speed, weight, gradient, and wind with FTP zones and power-to-weight ratio
Estimate VO2 max from running tests including Cooper test, 1.5 mile test, and Rockport walk test
Calculate total training volume per exercise and muscle group with weekly volume tracking
Estimate running distance from laps or blocks with common track sizes and elevation impact on pace
Calculate your personal carbon footprint from transportation, home energy, diet, and shopping habits
Calculate home energy usage by appliance with kWh estimates, monthly costs, and reduction tips
Calculate daily and monthly water usage from showers, toilets, laundry, dishwasher, and lawn care
Calculate trees needed to offset your carbon footprint with cost estimates and timeline projections
Score your lifestyle eco-friendliness from 0-100 based on transport, diet, home, consumption, and waste habits
Calculate insulation R-value needs by climate zone with material comparison and energy savings estimate
Calculate rainwater harvest potential from roof area, local rainfall, and barrel size for annual water savings
Compare LED vs incandescent and CFL bulbs for energy use, lifespan, cost savings, and payback period
Calculate DPI from pixel dimensions and print size, with minimum DPI recommendations and resize calculations
Calculate book spine width from page count and paper stock weight with common paper thickness reference
Estimate book page count from word count, font size, line height, margins, and trim size
Calculate label dimensions and count per sheet with common Avery sizes and print template CSS generator
Calculate weighted grades for assignments, quizzes, midterms, and finals with multiple grading scales and what-if scenarios
Generate multiplication tables from 1-12 or custom range with color-coded patterns and printable worksheet output
Estimate reading level using Flesch-Kincaid grade, Lexile estimate, and syllable analysis with grade suggestions
Calculate current moon phase from date using synodic period. Show phase name, illumination %, visual moon emoji/SVG.
Calculate distances between planets at average orbital positions. AU and km/miles. Light travel time.
Calculate apparent vs absolute magnitude. Distance modulus. Luminosity ratio between stars.
Determine zodiac sign from birthdate. Show dates, element, modality, ruling planet, traits. Both Western and Chinese zodiac.
Calculate orbital parameters: period, velocity, altitude for circular orbits. Geostationary orbit reference.
Tsiolkovsky rocket equation: delta-v from mass ratio and exhaust velocity. Stage calculator.
Interactive Drake equation: adjust all 7 parameters with sliders. Estimate communicating civilizations.
Calculate magnification, field of view, exit pupil from telescope and eyepiece specs.
Calculate gravitational force, surface gravity, escape velocity for different celestial bodies. Weight on other planets.
Calculate peak wavelength from temperature (Wien law). Stefan-Boltzmann luminosity. Color temperature.
Calculate recession velocity, distance, lookback time from redshift using Hubble law. Cosmological expansion.
Calculate food quantities for groups: main dishes, sides, drinks, desserts. Input guest count. Party planning.
Calculate daily caffeine intake from beverages: coffee, tea, soda, energy drinks. Safe limit comparison (400mg/day).
Calculate alcohol units from drink type, size, ABV%. Daily/weekly limit comparison. BAC estimate by weight.
Calculate sourdough bread ratios: flour, water, starter, salt. Hydration percentage. Bulk fermentation timing.
Home brewing calculations: OG, FG, ABV, IBU, SRM. Grain bill scaling. Hop utilization.
Calculate cheese making quantities: milk volume, rennet, cultures, salt. Yield estimate by cheese type.
Estimate meal nutrition from ingredients: calories, protein, carbs, fat, fiber. Common food database (100+ items).
Calculate trip fuel cost from distance, fuel efficiency (MPG/L per 100km), and fuel price. Compare vehicles.
Calculate tire diameter, width, sidewall height from tire size code (e.g., 225/45R17). Compare two sizes. Speedometer error.
Estimate vehicle value over time using declining balance depreciation. 5-year projection chart.
Calculate HP from torque and RPM. Also calculate quarter mile time from weight and HP (ET estimate).
Calculate wheel offset, backspacing, and clearance from wheel width, offset, and tire size.
Calculate 0-60 time from power-to-weight ratio. G-force. Braking distance from speed.
Calculate driving range from tank size and fuel efficiency. Reserve warning threshold. Trip feasibility.
Estimate event attendance: venue capacity, invite count, expected show rate by event type. Catering planning.
Calculate output voltage from R1, R2, Vin. Reverse: find R2 for desired Vout. Common resistor values.
Calculate 555 timer astable/monostable modes. Frequency, duty cycle from R1, R2, C values. Component suggestions.
Calculate low-pass/high-pass RC filter cutoff frequency. Component values for desired frequency. Bode plot hint.
Estimate battery life from capacity (mAh) and current draw. Support series/parallel configurations.
Calculate steps per revolution, step angle, speed from RPM, microstepping effects. Driver current setting.
Calculate power supply requirements: total current, voltage rails, efficiency. Wattage sizing with safety margin.
Calculate inductance from physical parameters or inductor code markings. Series/parallel inductors.
Calculate BJT biasing resistors for common emitter configuration. Operating point. Gain estimation.
Calculate gain for inverting/non-inverting/differential op-amp configs. Bandwidth consideration.
Calculate life path number, expression number, and soul urge from your name and birthdate. Reduce to single digit with meanings.
Split tip jar among workers by hours worked. Weighted or equal distribution. Fair share calculation.
Estimate truck size needed from room count and furniture list. Cubic feet estimation with truck size recommendations.
Calculate dog age in human years using the updated logarithmic formula. Adjusted by breed size: small, medium, large, and giant.
Calculate exposure settings: aperture, shutter speed, ISO relationships. Exposure Value table. Depth of field estimator.
Calculate maximum print size from camera megapixels at different DPI (150, 300). Aspect ratio considerations.
Calculate golden ratio proportions from any input value. Golden rectangle, spiral. Design applications guide.
Calculate canvas/paper dimensions for different aspect ratios. Standard frame sizes. Custom crop calculator.
Calculate coffee ratios: dose, water amount, and brew method. Golden cup ratio (1:15-1:18). Grind size guide by method.
Split party loot fairly: gold, items by value. Equal/weighted by contribution. Track owed amounts.
Calculate D&D damage: dice pools, modifiers, critical hits, resistances, vulnerabilities. Average and roll.
Calculate party supplies needed: plates, cups, napkins, food, and drinks based on guest count and budget.
Estimate property tax from assessed value and mill rate. Compare across multiple tax rates with monthly and annual breakdowns.
Calculate total move-in costs including first and last month rent, security deposit, broker fee, moving costs, and utilities setup.
Estimate home value using comparable sales approach: input comp prices, adjust for differences, and calculate price per square foot.
Compare utility costs between properties: electricity, gas, water, internet, and insurance with annual totals.
Split shared expenses among roommates: rent by room size, shared utilities, and groceries. Calculate monthly settlement amounts.
Estimate annual maintenance costs using the 1% rule, age factor, and system-by-system breakdown. Calculate a reserve fund target.
Estimate home closing costs including title insurance, appraisal, inspection, origination fees, and recording fees. See buyer vs seller split.
Estimate server requirements: CPU cores, RAM, storage from workload inputs. Cloud instance size recommendations.
Calculate backup storage needed: data size, retention period, change rate, compression ratio. Full vs incremental.
Calculate ring size from finger circumference. US, UK, EU sizing. Printable ring sizer.
Determine body shape from measurements: bust, waist, hip. Pear, apple, hourglass, rectangle, inverted triangle. Style tips.
Calculate sewing pattern adjustments from body measurements. Grade between sizes. Ease allowance.
Calculate bra size from band and bust measurements. US, UK, EU, AU conversion. Sister sizes.
Calculate hat size from head circumference. US, UK, EU, CM conversions. Sizing chart.
Check essay against word count requirements. Show paragraph count, reading time, word frequency. Over/under indicator.
Calculate weekly study hours from course credits. 2-3 hours study per credit hour. Time management chart.
Calculate daily food portions for dogs and cats by weight, age, and activity level. Calorie needs and feeding schedule.
Calculate aquarium needs: tank volume from dimensions, fish stocking level (1 inch per gallon rule), heater size, filter size.
Track aquarium water parameters: pH, ammonia, nitrite, nitrate, temperature. Safe ranges. History log. localStorage.
Calculate litter box needs: number of boxes (cats + 1 rule), litter amount, cleaning schedule. Cost estimate.
Calculate event revenue: ticket tiers, quantities, early bird pricing, comp tickets. Break-even analysis.
Calculate key ratios: program expense ratio, admin ratio, fundraising efficiency, working capital ratio.
Timed multiplication quiz: choose table (2-12 or random). Score, streak, accuracy. Difficulty progression.
Add, subtract, multiply, divide fractions. Show LCD, simplification steps. Mixed number conversion.
Show long division step by step with quotient, remainder, decimal expansion. Visual layout.
Check if number is prime. Find primes in range. Show prime factorization. Sieve of Eratosthenes visualization.
Calculate GCF and LCM of two or more numbers. Show Euclidean algorithm steps. Factor trees.
Interactive place value chart: ones through billions. Enter number, see each digit in its place. Decimals too.
Calculate area and perimeter for shapes: rectangle, triangle, circle, trapezoid, parallelogram. Formulas shown.
Calculate volume for 3D shapes: cube, rectangular prism, cylinder, cone, sphere, pyramid. Formulas and diagrams.
Calculate missing angles: supplementary, complementary, triangle angles, polygon interior angles. Visual Canvas diagram.
Enter a sequence of numbers, detect pattern (arithmetic, geometric, Fibonacci-like, square, cube). Predict next numbers.
Searchable reference of math symbols: algebra, calculus, logic, set theory, geometry. Name, symbol, usage.
Solve simple equations: linear (ax+b=c), quadratic (ax2+bx+c=0). Show steps. Discriminant check for quadratic.
Calculate PTO accrual: hours per pay period, used, remaining. Carryover rules. Calendar year vs anniversary year.
Calculate hiring needs: current headcount, attrition rate, growth targets, time to fill. Monthly hiring plan.
Calculate recruiter KPIs: time to fill, cost per hire, offer acceptance rate, source effectiveness. Benchmarks.
Tap to detect tempo. Average BPM over last 8 taps. Tempo marking name (Allegro, Adagio, etc.). Reset and accuracy display.
Guitar capo transposition chart: original chord shapes with capo position gives actual sounding key. All frets.
Calculate audio file size from duration, sample rate, bit depth, and channels. Compare WAV vs AIFF vs FLAC compression.
Calculate vinyl pressing costs and specs: RPM, side length, groove spacing. Cost per unit at different quantities.
Estimate electricity bill from appliance wattage x hours x rate. Add multiple appliances. Monthly projection.
Calculate blind/curtain sizes: inside vs outside mount. Width and length guidelines. Rod placement.
Calculate grout needed for tiling: tile size, grout joint width, area. Coverage per bag.
Calculate deck boards needed: deck dimensions, board width, gap spacing. Screw count. Materials list.
Calculate stair dimensions: total rise, number of treads, riser height, tread depth. Building code check.
Calculate crown molding needed: room perimeter, waste factor, corner count. Cost estimate.
Calculate dilution ratios for cleaning solutions. Concentrate to water ratios. Common product guides.
Calculate rain garden dimensions from roof area and soil type. Drainage rate. Plant suggestions.
Calculate firewood needs: BTU requirements, heating area, cord equivalent. Wood type comparison.
Calculate snow volume to remove from area and depth. Weight estimate. Time to shovel.
Calculate irrigation run times: plant type, soil type, sprinkler output rate. Weekly schedule.
Calculate carbon-to-nitrogen ratio for composting. Input materials with C:N ratios. Target 25-30:1.
Calculate coop and run size from chicken count. Sq ft per bird. Nesting boxes. Roosting bars.
Calculate beekeeping needs: hives, frames, supers, protective gear. Honey yield estimate. Startup costs.
Calculate greenhouse dimensions for plant count. Bench space. Ventilation. Heating requirements.
Calculate paint/stain for fencing: panel count, size, coats. Coverage per gallon. Cost estimate.
Calculate drainage pipe size from runoff volume, slope, pipe material. French drain sizing.
Calculate pergola materials: posts, beams, rafters, hardware from dimensions. Span tables reference.
Calculate hot tub operating costs: electricity, chemicals, water, maintenance. Monthly and annual totals.
Calculate roof pitch from rise and run. Degrees, ratio, percentage. Rafter length calculator.
Calculate drywall sheets needed: room dimensions, sheet size, openings. Joint compound and tape quantities.
Calculate pipe size from flow rate and velocity. Pressure drop estimation. Common pipe size reference.
Calculate electrical load: list circuits with amperage. Total load vs service capacity. NEC guidelines.
Calculate bricks needed for wall: dimensions, brick size, mortar joints. Different bond patterns.
Calculate rebar for concrete: slab size, spacing, bar size. Weight and cost estimate. Overlap requirements.
Calculate excavation volume for different shapes: rectangular, trapezoidal, irregular. Truck loads needed.
Calculate flooring costs: area, material type (hardwood, laminate, tile, carpet), labor rate. Waste factor.
Estimate HVAC tonnage from square footage, climate zone, insulation level. BTU requirements.
Calculate gutter size from roof area and rainfall intensity. Downspout spacing. K-style vs half-round.
Calculate countertop material: L-shaped, U-shaped layouts. Square footage with edge factor. Material cost comparison.
Calculate insulation: wall/attic area, R-value needed, material type. Bags or rolls needed. Cost estimate.
Calculate emergency water needs: 1 gallon per person per day. Household size, pets, duration. Storage solutions.
Calculate go-bag weight: list items with weight. Total weight vs recommended max. Priority sorting.
Calculate resin volume for molds: rectangular, cylindrical, spherical shapes. Resin-to-hardener ratio by brand.
Convert real dimensions to model scale: HO, N, O, G, Z, 1:24, 1:48, custom. Bidirectional conversion.
Calculate thread/floss needed for embroidery: stitch count, coverage area, floss strands. By stitch type.
Calculate glaze recipe amounts: unity formula, batch size scaling. Glaze chemistry basics reference.
Calculate leather needed for projects: pattern pieces, waste factor. Leather thickness reference (oz to mm).
Calculate lathe speed from workpiece diameter. Safe RPM ranges. Roughing vs finishing speeds.
Calculate cord needed for macrame projects: number of cords, cutting length multiplier by knot type.
Calculate mosaic tiles needed: area, tile size, grout spacing. Color distribution planner.
Calculate beads needed: strand length, bead size, clasp allowance. Bead weight estimation.
Calculate calories burned hiking: distance, elevation gain, body weight, pack weight. Terrain factor.
Calculate backpack weight: list gear items with weights. Target percentage of body weight. Category breakdown.
Calculate firewood needed for camping: duration, fire size, wood type. Bundle count estimate.
Calculate snowshoe size from body weight plus gear weight. Terrain type factor. Binding compatibility.
Calculate hiking pace and ETA: distance, elevation, fitness level. Naismith rule with Tranter corrections.
Estimate Social Security benefits from earnings history. Full retirement age by birth year. Early/delayed filing impact.
Calculate RMD from IRA/401k: account balance, age, life expectancy factor from IRS Uniform Lifetime Table.
Estimate annual healthcare costs: premiums, deductibles, copays, prescriptions, dental, vision. Compare plans.
Compare monthly pension vs lump sum payout. Present value calculation. Break-even age. Investment scenario.
Estimate long-term care costs: home care, assisted living, nursing home. By state average. Duration. Insurance coverage.
Estimate wireless range: walls, distance, material attenuation. Mesh repeater placement. Coverage map concept.
Estimate savings from smart thermostat: current vs optimized schedules. Setback degrees. Annual energy savings.
Calculate power draw through smart plugs: device wattage, usage hours. Daily/monthly cost. Identify energy hogs.
Work/break timer with sound notification, session counter, and customizable durations
Set a target date/time and watch a live animated countdown in days, hours, minutes, and seconds
Precise stopwatch with lap times, millisecond display, and lap history table
Add options and spin a colorful wheel for random selection with celebration effects
Generate random numbers with range, quantity, unique/duplicates, floats, and dice roller
Generate secure passwords with customizable length, character sets, strength meter, and bulk generation
Create checklists with add/remove/reorder, mark complete, progress bar, saved to localStorage
Simple kanban with To Do/In Progress/Done columns, drag and drop, add/edit/delete cards
Simple notepad with multiple notes, markdown preview, auto-save, search, and export
Track daily habits with streak counting, calendar view, and localStorage persistence
Create flashcard decks, flip cards, shuffle, track progress, saved to localStorage
4-quadrant priority matrix (urgent/important), drag tasks between quadrants, saved to localStorage
Hour-by-hour day planner (6am-10pm) with events, color coding, saved to localStorage
Set goals with milestones, subtasks, progress tracking, and deadlines. Saved to localStorage.
Track books to read, currently reading, and completed. Rate, add notes, saved to localStorage.
Create RACI responsibility assignment matrices with tasks and team members. Export as CSV or copy as table.
Create sprint retrospective boards with What went well, What to improve, and Action items columns. Vote on items and export.
Log and prioritize technical debt items with severity, effort, and impact scores. Track resolution progress.
Measure WPM and accuracy with random text passages, timer, error highlighting, and stats history
Fibonacci-based story point estimation tool with story tracking, card reveal, and velocity calculation
Create burndown charts from sprint data with ideal vs actual progress visualization using Canvas
Pomodoro-style timer with rain, coffee shop, white noise, and forest ambient sounds via Web Audio API
Create team skill matrices, rate skills 1-5, visualize with radar chart, and identify gaps
Structured weekly review with wins, challenges, learnings, and priorities. Save to localStorage, export as markdown
Add words with definitions, create flashcard-style study sessions, quiz mode, spaced repetition tracking. LocalStorage.
Study timer with technique options: Pomodoro (25/5), 52/17, 90-minute blocks. Session log, total study time tracking.
Simple time tracker: start/stop timer, add entries manually, daily/weekly summary, category tags. Uses localStorage.
Plan weekly meals (breakfast/lunch/dinner), grocery list generator from planned meals, save plans to localStorage.
Track daily water intake with visual glass counter, daily goal, streak tracking. Historical data in localStorage.
Calculate ideal sleep and wake times based on 90-minute sleep cycles. Find when to sleep or when to wake up.
Generate a content calendar template with themes, content types, platforms. Visual monthly calendar view. Export as CSV.
Card matching memory game with emoji cards. Multiple difficulties (4x4, 6x6). Score tracking, timer. Best score saved locally.
Classic Minesweeper game with beginner/intermediate/expert difficulties. Flag mines, timer, mine counter.
Classic Snake game on Canvas. Arrow keys to control, score counter, speed increases with length. High score saved locally.
Tic-tac-toe with AI opponent using minimax algorithm for unbeatable AI. Choose X or O, difficulty levels. Win/loss tracker.
Test reaction time: click when screen changes color. Average over 5 tries. Show percentile comparison.
Input names, generate random teams of specified size. Multiple rounds, balance options. Animation for team reveal.
Create custom trivia quizzes with questions, multiple choice answers. Take quizzes, track scores. Save quizzes to localStorage.
Guided meditation timer with bell sounds, interval bells, session lengths, and breathing guide
Guided breathing exercises with visual circle animation: Box breathing, 4-7-8, and Wim Hof
Daily gratitude entries with date tracking, history browsing, and localStorage persistence
Track daily mood with calendar heatmap visualization and patterns over time
Log exercises with sets, reps, weight. Create routines and track personal records
Intermittent fasting tracker with visual progress ring, elapsed/remaining time, and history
Pre-built stretch routines with timed intervals for each stretch and visual guide
Design custom Kanban workflows with columns, WIP limits, swimlanes. Export as JSON config. Visual preview.
Generate incident reports with timeline, impact, root cause, remediation steps. Multiple severity levels. Export as markdown.
Structured meeting minutes: attendees, agenda items, decisions, action items with owners/deadlines. Export markdown.
Write OKRs with objectives, key results, initiatives. Scoring (0-1.0). Track progress over quarters. Save to localStorage.
Interactive checklist for responsible AI deployment: fairness, transparency, privacy, accountability, safety, inclusivity.
Visual product roadmap with quarters, features, status (planned/in-progress/done), priority labels. Drag to reorder. Export.
Musical metronome with BPM control (20-300), tap tempo, time signatures (2/4, 3/4, 4/4, 6/8), accent beats. Web Audio API clicks.
Timer for presentations with configurable duration, warning thresholds (yellow/red), fullscreen mode, large display.
Interactive i18n readiness checklist: text externalization, date/number formatting, RTL support, Unicode, locale testing, cultural considerations.
Structured bug report generator with environment, steps to reproduce, expected/actual behavior, severity, priority. Copy as markdown.
Write user stories: "As a [user], I want [feature], so that [benefit]". Add acceptance criteria, priority, story points. Export.
Generate smoke test checklists by application type (web app, API, mobile). Core functionalities, login, data, navigation.
Create exploratory testing charters: explore [target], with [resources], to discover [information]. Time-boxed sessions. Notes.
Interactive release readiness checklist: tests passing, performance verified, documentation updated, rollback plan, monitoring alerts set.
Simple whiteboard with pen, eraser, color picker, line width. Canvas-based. Clear, undo, and download as PNG.
Simple flowchart creator: add boxes (process, decision, start/end, I/O), connect with arrows. Drag to move. Export as PNG.
Create mind maps with central topic and branching subtopics. Add/remove nodes, customize colors. Canvas-based rendering.
Create storyboard panels: draw in each frame (simple canvas), add scene descriptions, dialogue. Navigate between frames.
Display current time in multiple time zones simultaneously with analog clock faces
Multiple countdown timers for different events with visual countdown cards
Drag-to-create time blocks on a daily timeline with color-coded categories
Calculate quantities for meal prep with scaled shopping lists
Generate packing checklists by trip type with custom items and localStorage
Estimate project timelines using three-point estimation with confidence intervals
Calculate team sprint capacity with members, days off, ceremonies, and focus factor
Create structured meeting agendas with time allocations, owners, and per-topic timer
Structured annual review with accomplishments, goals, growth areas, and feedback sections
Work backwards from a deadline to generate a start schedule with milestones
Build multi-track conference schedules with rooms, time slots, speakers, and visual timetable
Plan sabbaticals with financial runway calculator, goals, and re-entry checklist
Find overlapping work hours across multiple time zones. Visual timeline showing availability windows.
Create a team directory with name, role, timezone, working hours, contact info. Save to localStorage. Visual timezone display.
Structured daily standup: yesterday, today, blockers. History log by date. Export as markdown. localStorage.
Structured project brief: objectives, audience, scope, timeline, budget, success metrics. Export markdown.
Create feedback forms with rating scales, open questions, multiple choice. Preview form. Export as HTML.
Log portfolio projects: title, description, tech stack, URL, image URL, date. Gallery view. localStorage.
Track networking contacts: name, company, how met, follow-up date, notes. Search/filter. localStorage.
Structured 1-on-1 templates: talking points, action items, feedback, goals check-in. History by date. localStorage.
Track daily work hours, breaks, exercise, personal time. Weekly summary charts. Burnout risk indicator.
Tap a button to detect BPM (beats per minute) with averaging and confidence interval
Ear training tool: identify musical intervals between two notes with score tracking
Set multiple named timers with different alert sounds using Web Audio API synthesis
Customizable soundboard with synthesized sounds and keyboard shortcuts via Web Audio API
Searchable bank of interview questions by category with STAR method template for structured answers
Map career paths from current role to target role with intermediate steps and skills needed, rendered on Canvas
Compare current skills vs job requirements, rate proficiency 1-5, identify gaps, and generate a priority learning matrix
Create personal SWOT analysis with Strengths, Weaknesses, Opportunities, Threats in quadrant layout with action items and localStorage
Track networking follow-ups with contact, context, last contact date, next action, and reminders using localStorage
Plan learning goals with topics, resources, estimated hours, and deadlines in a Kanban-style board with localStorage persistence
Searchable database of all countries: capital, population, area, currency, language, calling code, flag emoji. 195 countries.
Browse all IANA timezones: current time, UTC offset, DST status. Search and filter. Compare two timezones.
Track luggage weight: add items with weight. Sum total. Compare against airline limits (23kg, 7kg carry-on). Alerts.
Calculate jet lag severity based on timezone difference and travel direction. Recovery tips and adjustment schedule.
Searchable database of international phone dialing codes by country. How to format international calls.
Reference guide for passport photo dimensions by country. US, UK, EU, Schengen, India, China specs with visual guides.
Reference for electrical standards by country: voltage (110/220V), frequency (50/60Hz), plug types (A-N). Adapter guide.
Interactive PIA template: data collected, purpose, storage, access controls, retention, risk level. Generate report.
Build incident response plans: detection, containment, eradication, recovery, post-mortem. Role assignments.
Create RBAC matrices: roles, resources, permissions (read/write/delete/admin). Identify conflicts. Export.
5x5 risk matrix: likelihood x impact. Add risks, auto-classify (low/medium/high/critical). Heat map visualization.
Classify data types: public, internal, confidential, restricted. Define handling rules for each. Generate policy.
Create simple data flow diagrams: entities, processes, data stores, data flows. Add labels, trust boundaries.
Interactive event planning checklist with timeline view, progress tracking, and categories for venue, catering, invitations, entertainment, AV, and decorations
Track event RSVPs with name, attendance status, plus ones, dietary restrictions, summary stats, and CSV export
Create seating charts with round and rectangular tables, assign and drag guests between tables, and view visual layouts on Canvas
Timer for speeches and presentations with progress bar, green/yellow/red zones, customizable durations, large display, and alert sounds
Plan newsletter content with topics, sections, send dates, subject lines, CTAs, calendar view, and localStorage persistence
Generate fun and professional Slack statuses with emojis for focused, meeting, OOO, lunch, and casual categories
Interactive webinar planning checklist for platform setup, content prep, promotion, dry run, day-of tasks, and follow-up with timeline view
Plan raised garden beds: dimensions, soil volume needed, plant spacing grid, and companion planting reference.
Create watering schedules for different plants with indoor/outdoor and season adjustments. Saved to localStorage.
Annual home maintenance checklist for HVAC, plumbing, electrical, exterior, and safety. Monthly reminders with completion tracking.
Comprehensive moving checklist from 8 weeks before through moving day. Utility transfers, address changes, and packing timeline.
Simple top-down room planner: drag furniture shapes on a grid. Scale to real dimensions with sofa, table, bed, and desk pieces.
Countdown to next birthday. Show age in days/hours. Calculate day of week for past/future birthdays.
Track anniversaries with countdown. Traditional/modern gift suggestions by year. Save to localStorage.
Create chore rotation schedules for household members. Weekly rotation, fair distribution. Calendar view.
Plan capsule wardrobe: add items by category (tops, bottoms, shoes, outerwear). Mix-match outfit counter.
Track books: reading, completed, want-to-read. Pages read, yearly goal progress. Reading stats. localStorage.
Track movies: to watch, watched, favorites. Rating, genre, year. Filter/search. localStorage.
Track podcast episodes: show name, episode, listened status, notes, rating. Queue management. localStorage.
Generate daily positive affirmations by category: confidence, success, health, relationships, gratitude. Favorites.
Enter known letters with blanks, find matching words from built-in dictionary. Pattern matching: _a_e leads to cake, date, etc.
Classic hangman game with random words. Visual gallows drawing on Canvas. Category hints. Win/loss tracker.
Classic 2048 sliding tile game. Arrow key controls. Score tracking. Best score in localStorage. Smooth animations.
Connect Four game vs AI. Click column to drop piece. Win detection. AI uses simple minimax. Canvas rendering.
Classic Tetris game on Canvas. Arrow keys: move/rotate, down: soft drop, space: hard drop. Score, level, next piece preview.
Breakout/Arkanoid game on Canvas. Paddle, ball, bricks. Mouse/keyboard control. Score, lives, levels.
Simple Flappy Bird clone on Canvas. Click/space to flap. Score counter. High score in localStorage.
Design IF/THEN automation recipes by selecting triggers and actions from dropdowns
Add sequential workflow steps with name and description, reorder them, and export as a numbered list
Add process steps with type (action, decision, start, end) and display them as an ordered list
Pre-built change management checklist with checkboxes and progress bar, saved to localStorage
Interactive beta testing checklist: TestFlight/Play Console setup, tester groups, feedback forms, crash reporting.
Generate wiki page templates: getting started, FAQ, troubleshooting, onboarding, glossary. Structured sections.
Create organizational charts with boxes connected by lines. Add people with title/department. Canvas-based rendering.
Create process flows with steps, decisions, arrows. Sequential layout. Export as text.
Create Ishikawa/fishbone diagrams for root cause analysis. Add categories and causes. Canvas rendering.
Create simple Gantt charts with tasks, start/end dates, dependencies. Canvas timeline. Export.
RICE scoring (Reach, Impact, Confidence, Effort) for features. Sorted priority list. Score visualization.
Classic Simon game with colored buttons, growing sequences, and high score tracking
Identify the next element in visual patterns of shapes and colors with progressive difficulty
Classic 15-tile sliding puzzle with shuffle, move counter, and timer using canvas rendering
Classic Tower of Hanoi puzzle with 3-8 discs, visual rendering, move counter vs optimal
Toggle lights and adjacent cells to turn all lights off with multiple grid sizes and hints
Solve logic grid puzzles with clues, mark yes/no in the grid, and use auto-deduction
Flash a sequence of colors and repeat them from memory with increasing difficulty
Flash words at increasing speed with comprehension questions and WPM progress tracking
Focus training: watch a dot and click when it changes color to measure sustained attention
Track body measurements over time with history chart and localStorage persistence
Track scores for basketball, tennis, volleyball, and badminton with timer and period tracking
Plan weekly workout splits with push/pull/legs, upper/lower, full body, and bro split templates
HIIT timer with work and rest intervals, rounds, warmup, cooldown, and audio alerts
Self-assessment across cardio, strength, flexibility, and body composition with radar chart and improvement tips
Searchable guide to recyclable materials including paper, plastic types 1-7, glass, metal, and electronics
Track food waste by item and reason with weekly statistics and cost analysis using localStorage
Interactive composting guide with greens vs browns, ratios, a checklist of what to compost, and timeline
Interactive sustainable shopping checklist to score purchases on packaging, sourcing, certifications, and materials
Track writing word count goals with daily targets, streaks, progress bars, and NaNoWriMo mode
Create assessment rubrics with criteria, performance levels, and descriptions in a grid format with table export
Create lesson plans with objective, materials, procedure (intro/body/close), assessment, and differentiation in multiple formats
Track student attendance by date with present, absent, late, and excused statuses plus summary stats and CSV export
Input student names and randomize seating in a grid layout with re-shuffle, save, and print-friendly options
Track assignment deadlines with title, class, due date, and status sorted by urgency with calendar view and localStorage
Create student progress reports with grades by subject, comments, behavior, and recommendations in a print-friendly layout
Visual classroom timer with countdown display, traffic light indicator, alarm sound, full-screen mode, and multiple presets
Enter student names and randomly pick one with animation, history tracking, equal distribution mode, and exclusion option
Reference of major astronomical events: eclipses, meteor showers, planetary conjunctions, solstices/equinoxes for current year.
Interactive timeline of major space missions: Apollo, Space Shuttle, ISS, Mars rovers, Voyager, James Webb. Key facts.
Track growth experiments: hypothesis, metrics, results, learnings. ICE scoring (Impact, Confidence, Ease). localStorage.
Reference for safe cooking temperatures: beef, pork, poultry, fish, eggs. USDA guidelines. Doneness levels.
Interactive guide for baking substitutions: eggs, butter, milk, flour, sugar. Amounts and instructions.
Scoville heat scale reference: peppers and hot sauces ranked. Search and compare. Visual heat meter.
Food and wine pairing suggestions. Select food type, get wine recommendations. Classic pairing rules.
Cooking oil smoke points reference. Sorted by temperature. Best uses for each oil (frying, sauteing, dressing).
Calculate payload and towing limits: GVWR, curb weight, tongue weight. Safety margin indicator.
Track oil change intervals by mileage or time. Next change due reminder. Service history log. localStorage.
US state license plate format reference. State abbreviations, motto, plate style descriptions.
Track volunteer hours: organization, activity, date, hours. Total hours, certificates needed. localStorage.
Generate book discussion questions by genre. Universal questions for any book. Meeting agenda template.
Structured conference notes: academic progress, behavior, goals, action items. By subject. Print-ready.
Organize potluck events: guest list, dish assignments (appetizer/main/side/dessert/drink), dietary needs. Share-ready.
Schedule carpool rotations: drivers, passengers, days. Fair rotation algorithm. Weekly schedule view.
Log lost/found items: description, location, date, contact, status (lost/found/claimed). Search. localStorage.
Generate HOA meeting minutes: attendees, financial report, old/new business, motions, action items.
Log neighborhood watch observations: date, time, location, description, reported status. localStorage.
Track fundraiser progress toward goal. Donor log, thermometer visualization. Percentage milestones. localStorage.
Guide to selecting servos: torque requirements, speed, voltage, size. Common servo reference chart.
Soldering temperature reference by material: leaded, lead-free, different alloys. Iron tip care guide.
Searchable laundry care symbols reference: washing, drying, ironing, dry cleaning. Fabric-specific instructions.
Visual reference of common knots: bowline, cleat hitch, sheet bend, figure eight, square knot. Usage and strength ratings.
Compare battery types: AA, AAA, C, D, 9V, coin cells. Voltage, capacity, chemistry, and best uses.
Reference for screw and bolt types: head types, drive types, thread standards (metric and imperial). Size charts.
Step-by-step instructions for different paper airplane designs: dart, glider, stunt plane. Folding diagrams with text descriptions.
Searchable first aid reference: burns, cuts, sprains, choking, CPR basics. Emergency steps with disclaimer included.
Interactive camping checklist by trip type: car camping, backpacking, winter camping. Gear categories with localStorage persistence.
Generate cleaning schedule with daily, weekly, monthly, and seasonal tasks. Room-by-room breakdown. Print-friendly with localStorage.
Add gratitude notes to a virtual jar. Pull a random note, count your blessings. Visual jar that fills up. Saved with localStorage.
Track bucket list items by category: travel, career, personal, adventure. Mark items complete and see your progress. Saved with localStorage.
Track White Elephant gift exchange: participants, gifts, steal tracking, and turn order. Includes rules reference.
Track baby milestones: first smile, first word, first steps. Organized by age range with photo note fields. Saved with localStorage.
Log garden activities: planting, watering, harvesting, and observations. Organize entries by plant with date tracking. Saved with localStorage.
Plan DIY projects with materials list and cost, tools needed, steps, and time estimate. Built-in budget tracker. Saved with localStorage.
Track pet health records: vet visits, vaccinations, medications, and weight. Support for multiple pets with reminders. Saved with localStorage.
Log home items for insurance: name, category, value, purchase date, serial number. Calculates total value. CSV export. Saved with localStorage.
Log wine tasting notes: name, region, vintage, appearance, aroma, taste, and rating. Browse your collection. Saved with localStorage.
Track your yarn collection: brand, weight, color, yardage, and fiber content. Assign yarn to projects. Saved with localStorage.
Track scores for board games with multiple players and rounds. Running totals, winner detection, and game history.
Plan a time capsule: items to include checklist, letter template, opening date countdown. Saved with localStorage.
Log dreams with date, description, mood, recurring themes, and lucidity level. Browse entries and search by tags. Saved with localStorage.
Visual streak calendar for habits. Track daily completion, longest streak, current streak, and a year view heatmap.
Rate life areas 1-10: health, career, relationships, finances, fun, and growth. Radar chart visualization. Track changes over time.
D&D initiative tracker: add characters with initiative rolls, sort, track turns, HP, conditions. Next/previous turn buttons.
Build D&D encounters: select monsters, calculate difficulty (easy/medium/hard/deadly) based on party level and size.
Track spell slots by level (1-9). Mark used/available. Short/long rest recovery. Multiple character support. localStorage.
Structured RPG session notes: date, attendees, recap, key events, NPCs met, loot gained, quests. localStorage.
Generate a wedding day timeline with adjustable start times for getting ready, ceremony, photos, and reception events.
Manage wedding or event guest lists with name, party size, meal choice, RSVP status, and table assignment. Saved to localStorage.
Organize your bridal party with roles, contact info, outfit details, and responsibilities. Includes a checklist per person.
Track wedding registry items with store, price, purchased status, and who gifted them. Progress bar toward your goal. Saved to localStorage.
Assign guests to numbered tables, track capacity, move guests between tables, and print your seating layout.
Plan your rehearsal dinner with venue, menu, guest list, toasts schedule, seating, and a comprehensive checklist.
Plan your honeymoon with destination comparison, budget tracking, packing list, itinerary, and activity suggestions by destination type.
Traditional and modern anniversary gifts by year (1-60). Includes material, gemstone, and flower for each year.
Interactive move-in and move-out inspection checklist covering rooms, fixtures, and condition notes. Generates a print-ready report.
Track IT assets: device name, type, serial, assigned to, purchase date, warranty. localStorage. CSV export.
Define incident severity levels (P1-P5) with response times, escalation paths, communication templates. Reference guide.
Build AM/PM skincare routines: cleanser, toner, serum, moisturizer, SPF. Product order guide. Ingredient conflicts.
Complete fabric care symbol reference: washing, drying, ironing, bleaching, dry cleaning. With visual icons.
Plan weekly outfits: top, bottom, shoes, accessories. Weather-based suggestions. Save outfits. localStorage.
Structured world building: geography, politics, magic system, cultures, history, economy. Section templates. localStorage.
Outline stories using structures: 3-act, 5-act, hero journey, save the cat, Kishotenketsu. Beat sheets.
Track scenes with: goal, conflict, outcome, emotion, POV, word count. Drag to reorder. localStorage.
Map character relationships: allies, enemies, family, romantic. Visual connection list. Add notes per relationship.
Track daily word counts toward manuscript goal. Progress chart. Daily average. Days remaining estimate. localStorage.
Timed writing sprints: 10/15/20/30/60 min. Word count before/after. WPM calculation. Sprint history. localStorage.
Define character voice: vocabulary level, speech patterns, catchphrases, dialect notes, formality. Reference during writing.
Track story events on a timeline. Detect chronological inconsistencies. Day/hour tracking. Character locations.
Checklist for common sensitivity concerns in writing: stereotypes, representation, cultural accuracy, language. Self-review guide.
Plan study sessions: subjects, time blocks, exam dates. Weekly calendar view. Spaced repetition reminders. localStorage.
Generate research paper outlines: abstract, intro, lit review, methodology, results, discussion, conclusion. APA structure.
Create flashcard decks with spaced repetition. Leitner system boxes. Track mastery. Quiz mode. localStorage.
Plan academic year: semesters, exam periods, holidays, deadlines. Color-coded by urgency. localStorage.
Plan group projects: assign tasks to members, set deadlines, track progress. Gantt-style view. localStorage.
Track scholarship applications: name, deadline, amount, status, documents needed. localStorage.
Generate lab report templates: title, objective, hypothesis, materials, procedure, data, analysis, conclusion.
Structured note templates: Cornell method, outline method, mind map, charting, sentence method. Interactive.
Countdown to multiple exams. Study hours tracker. Panic meter based on remaining time vs material. localStorage.
Store and organize bibliographic sources. Generate citations in APA/MLA/Chicago. Search and filter. localStorage.
Find dog breeds by traits: size, energy, shedding, good with kids, apartment-friendly. Filterable database of 30+ breeds.
Browse cat breeds with traits: temperament, grooming needs, activity, good with dogs. 20+ breeds with filter and search.
Track pet vaccinations: vaccine name, date given, next due. Dog and cat schedules. Reminders. localStorage.
Track pet weight over time. Canvas line chart. Healthy weight range by breed size. Trend indicator. localStorage.
Reference guide for pet birds: budgie, cockatiel, parrot, canary, finch. Lifespan, diet, cage size, noise level.
Quick reference for pet emergencies: poisoning, choking, bleeding, seizures, heatstroke. When to call vet. Disclaimer.
Track dog training commands: sit, stay, come, heel, etc. Progress per command (learning/proficient/mastered). localStorage.
Travel checklist for pets: documents, carrier, food, medications, comfort items. By travel type (car/plane). localStorage.
Track pet medications: name, dose, frequency, start/end date, refill reminders. Multiple pets. localStorage.
Interactive checklist for pet adoption preparation: supplies, home prep, vet selection, pet-proofing. By pet type.
Generate grant proposal outlines: executive summary, need statement, goals, methods, evaluation, budget, sustainability.
Manage volunteers: name, role, availability, hours logged, skills. Kanban-style assignment board. localStorage.
Generate board meeting agendas: call to order, minutes, financial report, committee reports, old/new business, adjournment.
Interactive fundraising campaign checklist: planning, marketing, launch, during, wrap-up phases. Progress tracking.
Plan stakeholder communications: audience, message, channel, frequency, responsible person. Template per audience.
Flashcards for +, -, x, / facts. Flip to reveal answer. Track correct/incorrect. Spaced repetition.
Create interview scorecards: criteria, rating scale (1-5), interviewer notes. Calculate average scores. Print-ready.
Track candidates through hiring stages: applied, screening, interview, offer, hired/rejected. Kanban view. localStorage.
Interactive onboarding checklist: IT setup, HR paperwork, team intros, training, 30/60/90 day goals. By role.
Generate performance review templates: goals, competencies, achievements, areas for growth, development plan. Rating scale.
Build team org structures: add people with titles, reporting lines. Visual hierarchy list. Export.
Generate exit interview questions: reasons for leaving, management feedback, culture, recommendations. Summary report.
Assess training needs: skill gaps by role, priority matrix, budget estimation. Training plan template.
Plan team capacity: members, availability, holidays, projects. Utilization percentage. Over/under-allocated alerts.
Build song structures with intro, verse, chorus, bridge, outro sections. Drag to reorder, duration estimates, and common templates.
Plan mix bus routing: group tracks into buses (drums, vocals, instruments). Visual signal flow and export routing diagram.
Build performance setlists: songs, keys, tempo, duration. Total set time. Drag to reorder. Print-friendly. localStorage.
Log practice sessions: instrument, duration, focus area, notes. Weekly stats, streak tracking, and goal setting. localStorage.
Interactive release checklist: mixing, mastering, artwork, metadata, distribution, promotion, press. Timeline. localStorage.
Ring a mindfulness bell at set intervals during meditation. Configurable interval (1-30 min). Bell sound via Web Audio API.
Guided body scan meditation: step through body parts with timed focus. Visual body outline. Audio bell between sections.
Track anxiety levels 1-10 with triggers, coping strategies used. History chart. Pattern identification. localStorage.
Track sleep: bedtime, wake time, quality (1-5), disturbances, notes. Sleep efficiency calculation. Weekly chart. localStorage.
Interactive emotion wheel: primary emotions expanding to secondary and tertiary. Click to explore. Journaling prompts.
Self-care bingo card with activities: exercise, reading, nature, social, creative. Mark completed. New card generation.
Random stress relief activity suggestions by category: physical, creative, social, mindful, sensory. Timer for activity.
Build positive habits using habit stacking. Define cue-routine-reward. Track chains. 21/66 day milestones. localStorage.
Slow eating timer: pace meals with chewing reminders. 20-minute meal target. Bite counter.
Identify core values from list of 50+. Rank top 10. Align with current life areas. Action planning.
Anger management techniques: STOP technique, count-down, grounding exercises, rational response. Quick reference.
Guide to setting healthy boundaries: types, communication scripts, common situations, self-assessment quiz.
Track daily screen time by device/activity. Weekly totals. Goals. Digital wellness tips. localStorage.
Rate 8 life areas (health, career, money, relationships, fun, growth, environment, contribution). Canvas radar chart.
Design morning routines: activities with durations. Wake-up time calculator. Timer for each step. localStorage.
Standard window sizes reference by type: single-hung, double-hung, casement, slider, bay. Rough opening sizes.
Plan kitchen cabinets: base, wall, tall units. Standard sizes reference. Linear footage calculator.
Interactive 72-hour emergency kit checklist: water, food, first aid, tools, documents, clothing. By household size. localStorage.
Plan home fire escape routes: rooms, exits, meeting point. Print-friendly floor plan template. Practice schedule.
Earthquake prep checklist: secure furniture, emergency supplies, shut-off locations, communication plan.
Hurricane preparation: boarding windows, evacuation routes, supplies, insurance documents, pet plan.
Room-by-room home safety audit: smoke detectors, carbon monoxide, fire extinguishers, electrical, childproofing.
Winter storm checklist: heating backup, pipes, supplies, vehicle kit, communication plan.
Power outage preparedness: flashlights, batteries, food safety, generator safety, medical equipment backup.
Flood prep checklist: elevation check, sandbags, document protection, evacuation plan, insurance review.
Wildfire evacuation: go-bag contents, defensible space, pet evacuation, important documents, vehicle prep.
Tornado safety reference: safe rooms, warning signs, shelter locations, after-tornado safety checks.
Quick reference for CPR: adult, child, infant steps. Compression rate, depth, ratio. AED use. Disclaimer included.
Wick size selector by container diameter and wax type. Wick centering tips. Common wick series reference.
Reference for stamp grading: mint, used, centering, perforations. Condition grades. Storage tips.
Sheldon scale reference for coin grading: AG-3 through MS-70. Visual condition descriptions. Storage guide.
Reference for paper sizes, weights, types for crafting. Card blank sizes. Envelope sizing.
Plan scrapbook page layouts: 12x12, 8.5x11 pages. Photo sizes, mats, embellishment placement. Template gallery.
Plan trail snacks by calories needed: bars, nuts, dried fruit, jerky. Weight per calorie. Pack weight estimate.
Plan kayak trips: distance, speed, rest stops. Time estimate. Safety checklist. Weather considerations.
Reference guide for fishing knots: improved clinch, Palomar, uni, blood knot. Strength ratings. Step-by-step text.
UV index reference: 1-11+ scale, skin type sensitivity, SPF recommendations, exposure time limits.
General hunting season reference by game type. License requirements checklist. Safety gear reference.
Ski wax selection by snow temperature. Color-coded temperature ranges. Application steps.
Tidal patterns reference: spring vs neap tides, tidal range, fishing best times. Moon phase correlation.
7 Leave No Trace principles with detailed practice guidelines. Interactive knowledge check.
Recommended camera settings for outdoor scenarios: landscape, wildlife, water, night sky, snow, sunset.
Interactive Medicare enrollment checklist: Part A, B, C, D. Enrollment windows. Penalty calculator.
Checklist for downsizing/moving: declutter rooms, sell/donate/keep decisions, timeline, moving logistics.
Estate planning checklist: will, trust, power of attorney, healthcare directive, beneficiaries, digital assets.
Organize daily medications: name, dose, time, with food, purpose. Weekly pill organizer view. Print schedule. localStorage.
Reference guide for survivor benefits: Social Security, VA, pension, insurance claims. Timeline and checklist.
Reference of common senior discounts by category: restaurants, retail, travel, entertainment, services. Age requirements.
Generate memory exercises: word recall, number sequences, pattern matching, story recall. Difficulty levels.
Track daily walks: distance, duration, steps estimate. Weekly totals. Goal tracking. Streak. localStorage.
Flashcard quiz for all 46 hiragana characters. Show character, type romaji answer. Score tracking with localStorage.
Reference for 4 Mandarin tones with tone mark placement. Tone pair practice. Minimal pair examples.
Plan language learning: set goals, track daily study time, vocabulary count, milestones. Progress chart. localStorage.
Digital vocabulary notebook: word, translation, example sentence, category. Search. Quiz mode. localStorage.
Plan smart home setup: list devices by room, protocol (WiFi, Zigbee, Z-Wave, Matter), hub requirements. Compatibility checker.
Plan smart lighting: rooms, bulb types, color temp, scenes, schedules. Wattage and cost comparison vs traditional.
Build if-then automation rules: trigger, condition, action. Common templates: motion lighting, temperature, schedules.
Reference for Alexa, Google Home, Siri commands: lights, music, timers, routines, smart home. Searchable by task.
Guide for security camera placement: coverage areas, angle calculations, night vision range, storage requirements.
Compare smart lock features: connectivity, keypad, fingerprint, auto-lock, battery life, compatibility. Decision matrix.
Design automation scenes: movie night, bedtime, wake up, away mode. Devices and states per scene. Export config.
Analyze password strength with entropy calculation, charset analysis, common pattern detection, and improvement suggestions. No data sent anywhere.
Paste PEM certificate text to decode and display subject, issuer, validity dates, serial number, extensions, and SAN fields using JavaScript ASN.1 parsing.
Build CSP headers visually with all directives, presets for common configurations, and one-click copy of the complete header.
Generate SRI hashes (SHA-256, SHA-384, SHA-512) from file content or URL. Produce complete script/link tags with integrity attributes.
Educational reference for all important security headers with recommended values, explanations, and implementation examples for HSTS, CSP, X-Frame-Options, and more.
Verify webhook signatures for Stripe, GitHub, and Slack. Input payload, secret, and signature to verify HMAC
Validate cryptocurrency wallet addresses for Bitcoin (base58check), Ethereum (0x + checksum), Solana (base58) format.
Interactive comparison of encryption methods: AES, RSA, ChaCha20, bcrypt, scrypt, Argon2. Use cases, key sizes, performance.
Design password policies: min length, complexity, rotation, history, lockout. Generate policy document. Strength estimation.
Interactive guide for implementing 2FA: TOTP setup, backup codes generator, recovery procedures. QR code generation.
Comprehensive security audit checklist: authentication, authorization, encryption, logging, network, physical. Score.
Simplified STRIDE threat modeling: Spoofing, Tampering, Repudiation, Info Disclosure, DoS, Elevation. Per-component assessment.
Calculate CVSS v3.1 scores from base metrics: attack vector, complexity, privileges, impact. Show severity level.
Encode and decode ROT13, ROT5, ROT47 ciphers with custom rotation amount support
Simple text encryption and decryption using Web Crypto API AES-GCM with PBKDF2 key derivation
Upload image, view EXIF metadata, option to download image with metadata stripped (re-encode via Canvas).
Calculate when passwords expire based on policy. Track multiple accounts. Reminder dates. localStorage.
IoT device security checklist: default passwords, firmware updates, network segmentation, encryption. Score rating.
Upload an image and convert it to Base64 data URI. Shows size comparison and lets you copy as CSS background, HTML img tag, or raw Base64.
Convert between CSV and JSON formats. Handles headers, custom delimiters, and shows a preview table.
Convert between XML and JSON formats with support for attributes, CDATA sections, and nested elements.
Convert numbers between binary, octal, decimal, hexadecimal, and any custom base from 2 to 36.
Convert colors between HEX, RGB, HSL, HSV, and CMYK with a visual picker and live preview.
Convert between major currencies with hardcoded approximate rates. Support USD, EUR, GBP, JPY, CAD, AUD, CHF, CNY, INR, and more.
Input recipe ingredients and servings, scale up or down to desired servings. Handle unit conversions (cups to tablespoons, etc.).
Convert shoe sizes between US, UK, EU, Japan, CM. Men's and Women's size charts.
AWG/SWG wire gauge reference with diameter, area, resistance, max current. Voltage drop calculator for wire runs.
Reference chart for paper sizes: A series (A0-A10), B series, US sizes (Letter, Legal, Tabloid), envelope sizes. Visual comparison.
Convert between cups, tablespoons, teaspoons, ml, liters, oz, grams for common cooking measurements.
Paste HTML table, convert to Markdown table or CSV. Also convert between Markdown table and CSV.
Upload image, resize to custom dimensions or presets (social media sizes). Maintain aspect ratio option. Download resized PNG.
Upload an image and compress it with an adjustable quality slider (10-100%). See before/after file sizes and download the compressed result.
Convert images between PNG, JPEG, WebP, and BMP formats using Canvas toBlob. Preview the result and download in your chosen format.
Upload a PDF file and count its pages by parsing the PDF structure client-side. Also shows file size and estimated metadata.
Convert file sizes between bytes, KB, MB, GB, TB, and PB. Supports both binary (1024-based) and decimal (1000-based) standards.
Paste SVG code or upload an SVG file, then render it to PNG at a custom resolution using Canvas. Preview and download the PNG result.
Convert between frequency and wavelength. Support Hz to nm, radio frequencies, visible light spectrum visualization.
Convert between decimal degrees, DMS (degrees/minutes/seconds), UTM coordinates. Validate format.
Convert clothing sizes between US, UK, EU, Japan for men and women. Shirts, pants, dresses, shoes.
Convert recipe measurements between US cups, tablespoons, teaspoons, and metric ml/g. Weight conversions for common ingredients.
Convert between light years, parsecs, AU, km, miles. Travel time at various speeds.
Convert between celestial coordinates: RA/Dec, Alt/Az, galactic coordinates. With reference stars.
Convert ingredient measurements by weight/volume. Database of common ingredient densities. Cups to grams.
Convert between Fahrenheit, Celsius, Gas Mark. Common baking temperature reference chart.
Complete kitchen measurement reference: teaspoons to cups, dry vs liquid, metric conversions. Printable.
Convert between MPG (US/Imperial) and L/100km. Quick reference table. Fuel efficiency comparison.
International clothing size converter: US, UK, EU, Asia. Men and women. Tops, bottoms, shoes. Visual chart.
Bracelet, necklace, earring sizing. Chain length guide. Measure from existing jewelry. Visual reference.
Determine watch band size: lug width, wrist circumference. Common sizes by brand. Measurement tips.
Convert between Roman numerals and Arabic numbers. Validate Roman numeral format. Reference chart.
Convert between sample rates (44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz). Nyquist frequency and bit depth comparison.
Convert between climbing grades: YDS, French, UIAA, British, Australian. Bouldering V-scale.
Generate realistic fake names, emails, addresses, phone numbers, and companies. Configurable locale, bulk generation, and CSV export.
Generate placeholder images with custom size, colors, text, and format. Download as PNG using Canvas API.
Generate gallery layouts with placeholder images from picsum.photos. Customizable grid, image sizes, and effects.
Generate beautiful mesh gradient backgrounds with multiple control points and colors. Export as CSS or SVG.
Generate repeating SVG/CSS patterns including dots, lines, zigzag, checkers, waves, and more with color and size controls. Copy CSS output.
Select two emojis and combine them creatively using canvas blend modes
Convert text to ASCII art using multiple FIGlet-style font implementations
Generate a developer portfolio HTML page with name, bio, skills, projects, social links. Download complete HTML file.
Generate audio waveforms (sine, square, sawtooth, triangle) with Web Audio API. Frequency/volume controls. Visual waveform display.
Generate creative writing prompts by genre (fantasy, sci-fi, romance, mystery, horror). Random combinations of character, setting, conflict.
Generate random mazes using recursive backtracking on Canvas. Multiple sizes. Solve button shows solution path.
Conway's Game of Life on Canvas. Click cells to toggle, play/pause/step, speed control, common patterns (glider, blinker, etc.).
Virtual piano with 2 octaves. Click or use keyboard. Web Audio API for sound. Record and playback simple melodies.
16-step drum sequencer with kick, snare, hi-hat, clap, tom sounds using Web Audio API. BPM control, play/stop.
Browse and search curated prompt templates for ChatGPT/Claude by category. Click to copy. Add custom prompts to localStorage.
Generate Code 128, EAN-13, UPC-A barcodes using Canvas. Input product number, download as PNG. Validate check digits.
Generate white, pink, brown, and blue noise using Web Audio API. Volume control, timer, mix multiple noise types.
Play reference tones for standard guitar tuning (EADGBE) using Web Audio API. Show frequencies. Alternative tunings.
Upload an image and add top/bottom text with Impact font style. Customize text color, outline, and size. Download your meme as PNG.
Generate gradient wallpapers at custom resolutions. Multiple gradient types, random generation. Download as PNG.
Generate geometric patterns: triangles, hexagons, circles, squares with randomized colors. Canvas-based. Download.
Generate abstract art with random shapes, colors, compositions using Canvas. Controls for complexity, palette, style.
Generate mandala patterns with radial symmetry. Controls for segments, layers, complexity, colors. Canvas-based. Download.
Generate stylized QR codes with custom colors, rounded modules, logo placeholder area. Canvas-based generation.
Generate inline sparkline charts from data points. SVG-based. Customizable size, color, style (line, bar, dot). Copy SVG.
Reference chart for music chords: major, minor, 7th, diminished, augmented. Show notes for each chord. Audio playback via Web Audio.
Generate printable handwriting practice sheets with custom text, line types (solid, dashed, dotted), letter spacing. Print-friendly CSS.
Generate pure tones at any frequency (20Hz-20kHz) with sine, square, sawtooth, and triangle waveforms
Build chord progressions, select key and chords, play back with Web Audio API
Browse musical scales, view notes and intervals, play scales with Web Audio API
Input notes or chords from a song to determine possible keys using music theory
Generate random rhythm patterns in common time signatures, visualize as grid, play back with Web Audio
Play reference pitches for standard tuning (A440), orchestral tuning, and alternative tunings
Generate binaural beats with presets for focus, relaxation, and sleep using Web Audio API
Generate DTMF phone tones with a dial pad interface using Web Audio dual-tone synthesis
Generate baby names by origin (English, Spanish, Japanese, Arabic, etc.), gender, starting letter. Meaning included. Favorites list.
Roll various dice: D4, D6, D8, D10, D12, D20, D100. Multiple dice, modifiers. Roll history. Animated dice using Canvas.
Shuffle and deal cards from a standard 52-card deck. Visual card display using Unicode/CSS. Deal to multiple hands.
Generate random RPG characters: race, class, stats (3d6), background, alignment, name. D&D style. Re-roll individual stats.
Create weighted loot tables for games. Add items with rarity/weight, simulate drops. Distribution chart.
Generate names by type: fantasy, sci-fi, medieval, modern, Japanese, Norse. Gender options. Batch generation.
Generate random story plots: genre, protagonist, antagonist, setting, conflict, twist. Mix and match elements.
Generate word search puzzles: input word list, choose grid size, direction options. Print-friendly. Canvas rendering.
Generate placeholder text in multiple fake languages: Latin, pseudo-French, pseudo-German, pseudo-Japanese, and tech jargon
Generate acronyms from phrases and expand common tech and business acronyms
Create visual timelines with events, dates, descriptions. Vertical and horizontal layouts. Color-coded categories. Export as PNG.
Create feature comparison tables with checkmarks/x marks. Multiple columns. Export as HTML.
Create 2-circle or 3-circle Venn diagrams with labels for each section. Canvas rendering. PNG export.
Create radar/spider charts from data points. Customizable axes, colors. Canvas rendering. Compare multiple datasets.
Create hierarchical tree diagrams. Add parent/child nodes. Canvas rendering. Expand/collapse branches.
Create bar charts from data: labels, values, colors. Horizontal/vertical. Stacked option. Canvas. PNG export.
Create pie/donut charts from data. Labels, values, colors. Legend. Canvas rendering. PNG export.
Create line charts with multiple series. Axes labels, grid lines, legend. Canvas. PNG export.
Create scatter plots from X,Y data pairs. Trend line option. Multiple series. Canvas. PNG export.
Create infographic-style stat cards with big numbers, labels, icons, colors. Grid layout. Screenshot-ready.
Create histograms from numerical data with configurable bin count/width. Canvas rendering. Frequency table. PNG export.
Create box-and-whisker plots from data. Show quartiles, median, whiskers, outliers. Multiple datasets. Canvas.
Generate single and double elimination brackets for 4 to 64 teams with result tracking
Create quiz questions in multiple choice, true/false, and short answer formats with answer key and print-friendly output
Create spelling test worksheets with numbered blanks, optional hints, print-friendly formatting, and score calculator
Create vocabulary quizzes with word-definition matching, fill-in-the-blank, and multiple choice auto-generated from a word list
Generate printable certificates for achievement, completion, participation, and honor roll with customizable details using Canvas
Generate round-robin tournament schedules for 4-16 teams. Each team plays every other team. Balanced home/away.
Generate random lottery numbers for popular games: Powerball, Mega Millions, EuroMillions. Quick pick generator.
Generate fantasy potion recipes with random ingredients, effects, and brewing instructions. Fun and creative tool for writers and gamers.
Create beautiful affirmation cards with Canvas: custom text, gradient backgrounds, and decorative borders. Download as PNG.
Generate bingo cards with custom words or numbers. 5x5 grid with free center space. Print-friendly layout. Generate multiple cards.
Input participant names, randomly assign gift pairings with no self-assignment. Optional exclusions. Reveal assignments one at a time.
Fun name compatibility calculator using name letter values. Shows a percentage with animated heart display. For entertainment only.
Generate random fortune cookie messages in categories like wisdom, humor, career, and love. Click the cookie to reveal your fortune.
Display random motivational quotes from a built-in collection. Filter by categories: success, perseverance, creativity. Copy and share.
Generate random kindness suggestions for strangers, friends, family, community, and workplace. Includes a daily challenge mode.
Generate random D&D-style treasure hoards: gold, gems, magic items by CR level. Full loot tables.
Generate random NPCs: name, race, class, personality traits, appearance, motivation, secret. D&D-inspired.
Generate fantasy tavern/inn names with descriptions, menu items, NPCs, rumors. Multiple styles.
Generate hex grid maps with random terrain: forest, mountain, water, plains, desert, swamp. Canvas rendering.
Generate random events for RPGs: travel encounters, city events, dungeon events, weather. Multiple settings.
Generate random dungeon rooms: shape, size, features, monsters, traps, treasure, exits. Description text.
Generate character backstories: origin, family, defining event, motivation, flaw, bond. Narrative format.
D20/D100 wild magic surge effects table. Roll button with animated result. 50+ unique effects.
Create custom fantasy calendars: custom month names, day counts, moon phases, holidays.
Generate party theme ideas by occasion: birthday, graduation, baby shower, retirement. Includes decor, food, and activity suggestions.
Generate fun photo booth prop text and signs with canvas rendering, custom colors and fonts. Download as PNG.
Browse party games by type: icebreakers, team games, drinking games, and kids games. Includes rules, player count, and materials needed.
Generate random MAC addresses. Multiple formats (colon, dash, dot). Vendor OUI prefix option. Bulk generation.
Browse character names by culture: Celtic, Norse, Greek, Roman, Japanese, Arabic, Hindi, Slavic. Gender filter. Meanings.
Generate compelling opening lines by genre: action, dialogue, setting, mystery, reflection. Multiple templates.
Create visual fundraising thermometer: goal amount, current amount. SVG rendering. Embed code. Milestone markers.
Generate printable graph paper: square, isometric, dot grid, polar. Customizable spacing and color. Print CSS.
All major and minor key signatures with sharps, flats, circle of fifths, and relative minor/major pairs.
Searchable music theory reference: intervals, scales, modes, chord qualities, time signatures, and dynamics markings.
Play concert pitch A440 and all notes. Tuning standards comparison (A=415, 432, 440, 442, 444). Web Audio API.
Generate printable emergency contact cards: personal info, medical conditions, allergies, emergency contacts, doctor.
Generate wallet-sized medication cards: current meds, dosages, allergies, conditions, pharmacy, doctor. Print-ready.
Generate fill-in-the-blank grammar exercises: articles, prepositions, verb forms. Multiple languages. Self-check.
Generate printable travel phrase cards: essential phrases in 10 languages. Greetings, help, numbers, directions.
All tools are free and run locally in your browser. No data is sent to servers.