555 Timer Calculator

Calculate 555 timer astable/monostable modes. Frequency, duty cycle from R1, R2, C values. Component suggestions.

Common Component Suggestions

Common Capacitors:
10pF, 100pF, 1nF, 10nF, 100nF, 1uF, 10uF, 100uF, 470uF
Common Resistors:
1k, 4.7k, 10k, 22k, 47k, 100k, 220k, 470k, 1M

555 Pin Reference

Pin 1: GND        Pin 8: Vcc
Pin 2: Trigger    Pin 7: Discharge
Pin 3: Output     Pin 6: Threshold
Pin 4: Reset      Pin 5: Control

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