Timing / Calculator 47

PWM Duty Cycle

Duty cycle expresses the fraction of a repeating period spent high.

Your inputs

PWM Duty Cycle

Timing · 2 inputs

Calculated result25%
Example result
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How to use this calculator

  1. Enter on time in µs.
  2. Enter period in µs.
  3. Select Calculate and keep the output unit with the answer.

Before you use the answer

Check the component connections and unit prefixes before copying a result into a circuit notebook. These tools describe ideal, introductory circuits. They do not replace datasheets, thermal checks, isolation requirements or qualified design work, and they are not intended for mains installation decisions.

On time cannot exceed the full period in this definition.

Does it save my inputs?

No calculation history is stored by this website. The calculator works locally in your browser. See the privacy policy for hosting and contact details.

Why might a result be approximate?

Measurement uncertainty, ideal-model assumptions and floating-point rounding can all matter. Displaying more digits does not improve the original measurement.

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