Hz to kHz Converter
Convert hertz to kilohertz instantly. 1 Hz = 0.001 kHz, worked steps and a full reference table.
How to use it
- Type the value in hertz — 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 Hz | 0.001 kHz |
| 5 Hz | 0.005 kHz |
| 10 Hz | 0.01 kHz |
| 100 Hz | 0.1 kHz |
One hertz equals 0.001 kilohertzes (kHz). To convert hertzes to kilohertzes, multiply by 0.001; to go back the other way, multiply by 1000 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 hertzes and kilohertzes actually measure
Hertz (Hz) — The hertz is one cycle per second. Mains supply, audio pitch and refresh rates.
Kilohertz (kHz) — A kilohertz is a thousand hertz. Audio sampling and AM radio.
Hz to kHz conversion table
The most common values, worked out in advance. Anything not listed can be typed straight into the converter.
| Hz | kHz |
|---|---|
| 1 Hz | 0.001 kHz |
| 2 Hz | 0.002 kHz |
| 5 Hz | 0.005 kHz |
| 10 Hz | 0.01 kHz |
| 25 Hz | 0.025 kHz |
| 50 Hz | 0.05 kHz |
| 100 Hz | 0.1 kHz |
How to convert hertzes to kilohertzes by hand
Multiply the number of hertzes by 0.001.
For example, 25 Hz × 0.001 = 0.025 kHz.
Going the other way, divide by 0.001 — or multiply by 1000, 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 kHz are in 1 Hz?
1 Hz equals exactly 0.001 kHz. Multiply any value in hertz by 0.001 to get kilohertz.
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