Duty Cycle Calculator

Calculate PWM Duty Cycle, Pulse Width, Period, and Frequency depending on known parameters.

Signal Parameters

Enter EXACTLY two parameters to calculate the rest

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PWM Signals

What is Duty Cycle?

Duty cycle is the percentage of one period in which a signal is active (high or ON). It is commonly used in Pulse Width Modulation (PWM) to control the average power delivered by an electrical signal.

t_ont_offPeriod (T = t_on + t_off)

Formulas:

  • Duty Cycle (%) = (t_on / Period) × 100
  • Period (T) = 1 / Frequency (f)
  • Average Voltage = V_max × (Duty Cycle / 100)