34 free online tools. No signup required.
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.