PWM Duty Cycle Calculator
Calculate PWM on/off timing, average voltage, and an ideal RPM estimate.
Processing stays in your browser. RPM assumes a linear unloaded motor response. Real drivers, loads, losses, and motor types differ; the tool does not control hardware.
How to use the pwm duty cycle calculator
Calculate PWM on/off timing, average voltage, and an ideal RPM estimate. Complete the supply voltage (v), duty cycle (%), pwm frequency (hz), nominal full-duty rpm fields above. Choose Run tool, review the output, then copy or download the result.
Example
50% of 12 V gives an ideal average 6 V.
Good to know
RPM assumes a linear unloaded motor response. Real drivers, loads, losses, and motor types differ; the tool does not control hardware.