Hz to kHz Converter
Convert hertz (Hz) to kilohertz (kHz) instantly. Type a value — the result updates as you type, and the swap button converts the other way.
Hz to kHz formula
kHz = Hz ÷ 1000
1 hertz = 0.001 kilohertz · 1 kilohertz = 1000 hertz
To convert hertz to kilohertz, divide the value by 1000. For example, 440 Hz:
kHz = 440 ÷ 1000kHz = 0.44
So 440 Hz = 0.44 kHz.
Mental math shortcut
This conversion is exact, so there is no need to estimate: just divide by 1,000.
Hz to kHz conversion table
kHz back to Hz
The same values converted the other way, rounded for everyday use:
| Kilohertz | Hertz |
|---|---|
| 0.06 kHz | 60 Hz |
| 0.44 kHz | 440 Hz |
| 1 kHz | 1000 Hz |
| 5 kHz | 5000 Hz |
| 20 kHz | 20000 Hz |
| 44.1 kHz | 44100 Hz |
About the units
Hertz (Hz)
A hertz is one cycle per second — the unit of frequency for sound, radio and electricity.
Kilohertz (kHz)
A kilohertz is 1,000 hertz. AM radio and audio sample rates are given in kHz.
Frequently asked questions
How many kilohertz are in a hertz?
One hertz equals 0.001 kilohertz.
What is 440 Hz in kHz?
440 Hz = 0.44 kHz.
How do I convert kHz back to Hz?
Multiply the kilohertz by 1000.