555 Timer Calculator

This calculator determines the output pulse timing and frequency for the NE555 timer integrated circuit, one of the most versatile building blocks in electronics.

Use this tool to:

  • Calculate Monostable Pulse Width for time-delay circuits, touch switches, or frequency dividers.
  • Determine Astable Frequency and Duty Cycle for LED flashers, tone generators, and pulse-width modulation (PWM) controllers.
  • Visualize the output waveform to verify if your high/low timing ratios are correct for your specific logic application.
Configuration
Timing Results
Output Waveform (Voltage vs Time)

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