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Convert hertz to kilohertz
Instant, accurate Hz → kHz conversion with a live converter, table and formula.
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1 hertz = 0.001 kilohertz
1 kilohertz = 1000 hertz
hertz to kilohertz table
| hertz (Hz) | kilohertz (kHz) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
kilohertz = hertz × 0.001.
Example
10 hertz = 0.01 kilohertz.
What is a hertz?
The hertz (Hz) is one cycle per second, the SI unit of frequency.
What is a kilohertz?
A kilohertz (kHz) is 1,000 Hz.
Real-world reference points
Mains power hums at 50/60 Hz; concert pitch A is 440 Hz; CPUs run in the GHz range.
| Reference | hertz | kilohertz |
|---|---|---|
| Mains electricity (50 Hz regions) | 50 Hz | 0.05 kHz |
| Concert pitch A4 | 440 Hz | 0.44 kHz |
| FM radio (~100 MHz) | 100,000,000 Hz | 100,000 kHz |
| Modern CPU (3.5 GHz) | 3,500,000,000 Hz | 3,500,000 kHz |
Mistakes to avoid with frequency conversions
- Confusing MHz with Mbps — clock frequency and data throughput are different things.
- Assuming higher GHz always means faster: per-clock work and core counts matter as much.
- Mixing 50 Hz and 60 Hz appliance ratings across regions — motors and clocks care.
Frequently asked questions
How many kilohertz in a hertz?+
1 hertz = 0.001 kilohertz.
How do I convert hertz to kilohertz?+
Enter the value in the hertz box above and the kilohertz value appears instantly. You can also type in the kilohertz box to convert the other way.
Is this Hz to kHz converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.