Rad/s to Hz Converter
Convert radians per second to hertz instantly. 1 rad/s = 0.1591549431 Hz, worked steps and a full reference table.
How to use it
- Type the value in radians per second — 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 rad/s | 0.1591549431 Hz |
| 5 rad/s | 0.7957747155 Hz |
| 10 rad/s | 1.591549431 Hz |
| 100 rad/s | 15.91549431 Hz |
One radians per second equals 0.15915494 hertzes (Hz). To convert radians per seconds to hertzes, multiply by 0.15915494; to go back the other way, multiply by 6.2831853 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 radians per seconds and hertzes actually measure
Radians per second (rad/s) — Radians per second is angular velocity, and one hertz is 2π rad/s. Mechanics, control systems and rotational dynamics.
Hertz (Hz) — The hertz is one cycle per second. Mains supply, audio pitch and refresh rates.
Rad/s to Hz conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| rad/s | Hz |
|---|---|
| 1 rad/s | 0.15915494 Hz |
| 2 rad/s | 0.31830989 Hz |
| 5 rad/s | 0.79577472 Hz |
| 10 rad/s | 1.5915494 Hz |
| 25 rad/s | 3.9788736 Hz |
| 50 rad/s | 7.9577472 Hz |
| 100 rad/s | 15.915494 Hz |
How to convert radians per seconds to hertzes by hand
Multiply the number of radians per seconds by 0.15915494.
For example, 25 rad/s × 0.15915494 = 3.9788736 Hz.
Going the other way, divide by 0.15915494 — or multiply by 6.2831853, 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 rad/s?
1 rad/s equals exactly 0.1591549431 Hz. Multiply any value in radians per second by 0.1591549431 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