RPM to Hz Converter
Convert revolutions per minute to hertz instantly. 1 rpm = 0.01666666667 Hz, worked steps and a full reference table.
How to use it
- Type the value in revolutions per minute — the result updates as you type.
- Use Swap to flip the direction, or change either dropdown to convert between any two units.
- Click the result to copy it. The URL updates too, so you can bookmark or share the exact conversion.
Examples
| 1 rpm | 0.01666666667 Hz |
| 5 rpm | 0.08333333333 Hz |
| 10 rpm | 0.1666666667 Hz |
| 100 rpm | 1.666666667 Hz |
One revolutions per minute equals 0.016666667 hertzes (Hz). To convert revolutions per minutes to hertzes, multiply by 0.016666667; to go back the other way, multiply by 60 instead.
The converter above does it as you type and shows the working underneath, so you can check the arithmetic rather than take the number on trust.
What revolutions per minutes and hertzes actually measure
Revolutions per minute (rpm) — Revolutions per minute — one rpm is 1/60 hertz. Engines, hard drives, motors and washing machines.
Hertz (Hz) — The hertz is one cycle per second. Mains supply, audio pitch and refresh rates.
RPM to Hz conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| rpm | Hz |
|---|---|
| 1 rpm | 0.016666667 Hz |
| 2 rpm | 0.033333333 Hz |
| 5 rpm | 0.083333333 Hz |
| 10 rpm | 0.16666667 Hz |
| 25 rpm | 0.41666667 Hz |
| 50 rpm | 0.83333333 Hz |
| 100 rpm | 1.6666667 Hz |
How to convert revolutions per minutes to hertzes by hand
Multiply the number of revolutions per minutes by 0.016666667.
For example, 25 rpm × 0.016666667 = 0.41666667 Hz.
Going the other way, divide by 0.016666667 — or multiply by 60, which is the same thing and easier to do in your head.
Everything runs in your browser
There is no server involved in the calculation. The numbers you type never leave your device, nothing is logged, and the page keeps working with no connection once it has loaded. That is not a marketing line — it is simply how the tool is built, because a calculation like this has no reason to touch a network.
Questions people ask
How many Hz are in 1 rpm?
1 rpm equals exactly 0.01666666667 Hz. Multiply any value in revolutions per minute by 0.01666666667 to get hertz.
Is anything uploaded to a server?
No. The whole calculation happens in your browser. Nothing is sent anywhere, and the page keeps working offline once loaded.
Last updated 18 August 2026