555 Timer Calculator

This simple tool allows you to calculate the values for R1, R2 and C1 for a desired Frequency, it also calculates the Duty Cycle.

Don't bother or stress trying to figure out what values to use in your home projects, simply launch this app and the calculations are done for you automatically. You can either enter the Values for R1, R2 and C1 and calculate the output frequency, or simply enter the desired Frequency and your Capacitor value and the app will calculate R1 and R2 as simple as that.

Calculations are done either for astable mode or Monostable mode.

Please leave your comments and feedback, suggestions are always welcome, we will add new features as we progress.

Thank you for using 555 Timer Calculator.