Frequency Converter

Frequency counts how often something happens per unit of time. Radio and processors are measured in hertz multiples, engines and fans in revolutions per minute, music and heart rate in beats per minute, and rotating systems in radians per second. One hertz is one cycle per second, which is 60 RPM or 2π rad/s.

How to use Frequency Converter

1. Type the value you want to convert.
2. Choose the unit you have in From and the unit you want in To. The swap button turns the conversion round.
3. Read the answer, with the formula underneath. For example, 3,000 RPM = 50 Hz.
4. Open All units to see the value in every unit at once, and copy the one you need.

When it comes in handy

• Converting motor and fan speeds between RPM and Hz.
• Radio, Wi-Fi and processor frequencies.
• Physics problems with angular velocity.

Frequently asked questions

How do I convert RPM to Hz?

Divide by 60. 1,500 RPM is 25 Hz.

How are Hz and rad/s related?

One full cycle is 2π radians, so ω (rad/s) = 2π × f (Hz).