Convert Kilohertz to Hertz
1 kilohertz is 1,000 Hz. One kilohertz is exactly 1000 hertz.
One kilohertz is 1000 hertz. To convert kilohertz to hertz, multiply by 1000; to go the other way, divide by 1000 or multiply by 0.001. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A thousand hertz.
Factor checked against the defining standard · How we check
- Kilohertz × 1000
1 * 10001,000 Hz
1 kilohertz in every frequency unit
| Unit | Value | Exact factor |
|---|---|---|
| hertz | 1,000 Hz | × 1,000 |
| kilohertz (as entered) | 1 kHz | — |
| megahertz | 0.001 MHz | × 0.001 |
| gigahertz | 0.000001 GHz | × 0.000001 |
| terahertz | 0.000000001 THz | × 0.000000001 |
| revolutions per minute | 60,000 rpm | × 60,000 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilohertz to hertz? The converter and the working
- 1.Take the measurement in kilohertz.
- 2.Multiply by 1000 — that is how many hertz fit in one kilohertz.
- 3.To go back the other way, divide by 1000, or multiply by 0.001.
Worked example: 25 kilohertz to hertz
- Formula
- kHz × 1000 = Hz
- Arithmetic
- 25 × 1000 = 25,000 Hz
- Answer
- 25 kHz = 25,000 Hz
The factor is exact, so this figure is exact too — only the display is rounded.
Kilohertz to hertz conversion table
| Kilohertz | Hertz |
|---|---|
| 1 kHz | 1,000 Hz |
| 2 kHz | 2,000 Hz |
| 3 kHz | 3,000 Hz |
| 4 kHz | 4,000 Hz |
| 5 kHz | 5,000 Hz |
| 6 kHz | 6,000 Hz |
| 7 kHz | 7,000 Hz |
| 8 kHz | 8,000 Hz |
| 9 kHz | 9,000 Hz |
| 10 kHz | 10,000 Hz |
| 12 kHz | 12,000 Hz |
| 15 kHz | 15,000 Hz |
| 20 kHz | 20,000 Hz |
| 25 kHz | 25,000 Hz |
| 50 kHz | 50,000 Hz |
| 100 kHz | 100,000 Hz |
| 200 kHz | 200,000 Hz |
| 300 kHz | 300,000 Hz |
| 500 kHz | 500,000 Hz |
| 1000 kHz | 1,000,000 Hz |
| 2000 kHz | 2,000,000 Hz |
| 5000 kHz | 5,000,000 Hz |
| 10000 kHz | 10,000,000 Hz |
What is a kilohertz?
A thousand hertz. AM radio is broadcast here — 540 to 1600 kHz — and audio sampling is quoted in it: a CD samples at 44.1 kHz.
What is a hertz?
One cycle per second. The SI unit is defined as a reciprocal second, which is why it is used for periodic events and never for a rate of something that is not periodic.
How many hertz are in a kilohertz?
One kilohertz is 1000 hertz, exactly. Going the other way, one hertz is 0.001 kilohertz. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every frequency unit here
The whole group — 6 units with their symbols and the size of each one in hertzs — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a kilohertz.
Source: NIST Special Publication 811 — the hertz, and SI prefixes
Cite this page
- APA
- Rule Calculator. (2026). Convert Kilohertz to hertz. Rule Calculator. https://rulecalculators.com/convert/kilohertz-to-hertz
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Questions people actually ask
- How many hertz are in a kilohertz?
- 1000. One cycle per second. The SI unit is defined as a reciprocal second, which is why it is used for periodic events and never for a rate of something that is not periodic.
- How do I convert hertz back to kilohertz?
- Divide by 1000, or multiply by 0.001 — they are the same operation.
Other frequency conversions
Hertz to kilohertz — the same conversion the other way.