Arduino Servo Pulse Width Calculator

About this tool

Convert between a servo angle (0–180°) and the PWM pulse width in microseconds that produces it — matching the Arduino Servo library's default 544–2400µs range, or your own calibrated range if your servo's datasheet specifies different limits.

Frequently asked questions

Why 544 and 2400 specifically?

Those are the Arduino Servo library's default min/max pulse widths for servo.write(angle) — a wider range than the "standard RC" 1000–2000µs, giving many servos a bit more travel at the extremes. Your specific servo may have a narrower safe range; check its datasheet.

What if I've called servo.attach(pin, min, max) with custom values?

Enter those same min/max values here so the angle-to-microseconds mapping matches what your sketch will actually send — the library uses whatever range you passed to attach().

Is the mapping linear?

Yes — both the Servo library and this calculator treat 0° through 180° as a straight linear mapping across the min/max pulse-width range.