How to convert hertz to kilohertz
To convert hertz to kilohertz, multiply by 0.001. Frequency conversions apply to radio, audio, processors, motors and electrical systems.
Hertz to Kilohertz conversion table
| Hertz (Hz) | Kilohertz (kHz) |
|---|---|
| 0.1 Hz | 0.0001 kHz |
| 0.5 Hz | 0.0005 kHz |
| 1 Hz | 0.001 kHz |
| 2 Hz | 0.002 kHz |
| 3 Hz | 0.003 kHz |
| 4 Hz | 0.004 kHz |
| 5 Hz | 0.005 kHz |
| 10 Hz | 0.01 kHz |
| 20 Hz | 0.02 kHz |
| 25 Hz | 0.025 kHz |
| 50 Hz | 0.05 kHz |
| 100 Hz | 0.1 kHz |
| 500 Hz | 0.5 kHz |
| 1,000 Hz | 1 kHz |
About the units
Hertz (Hz)
One hertz is one cycle per second.
Kilohertz (kHz)
A kilohertz is 1,000 Hz, common for AM radio and audio.
How to use this converter
- Type the number of hertz (Hz) in the input box.
- The result in kilohertz appears instantly — no button needed.
- See the same value in every other frequency unit just below.
- Use “Swap units” to convert kilohertz back to hertz.
When you’ll use the hertz to kilohertz conversion
Converting hertz to kilohertz comes up more often than you might expect — for example when radio and Wi-Fi band settings, motor and fan speeds in rpm, or audio and music production. Type your number once and you get the exact answer plus every related unit, so you don’t need to convert twice.
💡 The factor is exact and easy to remember: 1 Hz = 0.001 kHz.
Watch out for these mix-ups
- rpm counts full revolutions per minute; Hz counts cycles per second (60 rpm = 1 Hz).
- MHz and Mbps sound alike but measure different things.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many kilohertz are in one hertz?
One hertz equals 0.001 kilohertz. 0.001 is the exact factor used by this converter.
How do I convert hertz to kilohertz?
Multiply the value in hertz by 0.001. To go the other way, multiply kilohertz by 1,000.
What is 10 Hz in kHz?
10 Hz = 0.01 kHz. Also, 5 Hz = 0.005 kHz and 100 Hz = 0.1 kHz.
What is the difference between a hertz and a kilohertz?
One hertz is one cycle per second. A kilohertz is 1,000 Hz, common for AM radio and audio.
Is this tool free and private?
Yes — the Hertz to Kilohertz is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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