Kilohertz to Hertz
A kilohertz is 1,000 hertz, used to describe audio sample rates and AM radio broadcast frequencies. The hertz is the SI unit of frequency, one cycle per second, used for sound pitch, electrical current, and CPU clock speed. 1 kHz equals 1,000 Hz, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to frequency, measured here against frequency's base unit (Hz) — every other frequency unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
Hz = kHz × 1,000
kHz = Hz × 0.001
Worked example: 5 kHz × 1,000 = 5,000 Hz.
Conversion table
| Kilohertz (kHz) | Hertz (Hz) |
|---|---|
| 1 kHz | 1,000 Hz |
| 2 kHz | 2,000 Hz |
| 3 kHz | 3,000 Hz |
| 5 kHz | 5,000 Hz |
| 10 kHz | 10,000 Hz |
| 20 kHz | 20,000 Hz |
| 25 kHz | 25,000 Hz |
| 50 kHz | 50,000 Hz |
| 100 kHz | 100,000 Hz |
| 250 kHz | 250,000 Hz |
| 500 kHz | 500,000 Hz |
| 1,000 kHz | 1,000,000 Hz |
Frequently asked
- How many Hertz in a kilohertz?
- 1 kHz equals 1,000 Hz.
- How do I convert Kilohertz to Hertz?
- Multiply the value in kHz by 1,000 to get Hz. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Kilohertz and Hertz are both defined by a fixed conversion factor to frequency's base unit (Hz), so the result shown is exact to the precision displayed, not an approximation.