Kilohertz to hertz
Multiply kilohertz by 1,000 to get hertz.
44.1 kHz = 44,100 Hz
How to convert kilohertz to hertz
The hertz is the SI unit of frequency, one cycle per second. The kilohertz is one thousand hertz (10³ Hz).
Worked example — 44.1 kHz: 44.1 × 1,000 = 44,100 Hz.
Kilohertz to hertz table
| Kilohertz | Hertz |
|---|---|
| 1 kHz | 1,000 Hz |
| 5 kHz | 5,000 Hz |
| 10 kHz | 10,000 Hz |
| 20 kHz | 20,000 Hz |
| 44.1 kHz | 44,100 Hz |
| 48 kHz | 48,000 Hz |
| 100 kHz | 100,000 Hz |
| 500 kHz | 500,000 Hz |
| 1,000 kHz | 1,000,000 Hz |
Reverse and related
About kilohertz and hertz
Kilohertz (kHz)
1 kHz = 1,000 HzDefinition. One thousand hertz (10³ Hz)
History and origin
The kilohertz is one thousand hertz, a convenient multiple for sound and radio. It became familiar through AM radio tuning and audio sampling.
Current use
Kilohertz are used for audio sample rates and AM radio frequencies.
Source: BIPM SI Brochure (2019); ISO 80000-3
Hertz (Hz)
1 Hz = 0.001 kHzDefinition. The SI unit of frequency, one cycle per second
History and origin
The hertz is the SI unit of frequency, one cycle per second, named after Heinrich Hertz, who first produced and detected radio waves in the 1880s. It replaced the older term cycles per second.
Current use
Hertz measure screen refresh rates, audio pitch and the frequency of mains electricity.
Source: BIPM SI Brochure (2019); ISO 80000-3
Where people use this
Kilohertz: audio sample rates, radio. Hertz: refresh rates, audio, mains power. 1 kHz is exactly 1000 Hz.
Every value is carried to full double precision; the display is rounded.
Both units are defined in BIPM SI Brochure (2019); ISO 80000-3.
Questions people ask
How many Hz in a kHz?
One kilohertz is exactly 1000 hertz.
How many Hz is 44.1 kHz?
44.1 kHz (CD audio) is 44,100 Hz.
How many Hz is 20 kHz?
20 kHz, the top of human hearing, is 20,000 Hz.