Hz to Khz Converter
Convert hertz to kilohertz instantly. Free frequency converter for electronics.
Formula
kHz = Hz / 1000
Common Conversions
How to Convert Hz to kHz
1 kHz = 1,000 Hz. Divide Hz by 1,000 (or move decimal three places left) to get kHz. So 5,000 Hz = 5 kHz. The kilohertz prefix means exactly 1,000 hertz. Used in: audio frequencies, radio frequencies, processor clock speeds.
Common reference frequencies: human hearing range 20 Hz - 20,000 Hz (= 20 kHz). Phone audio 300-3,400 Hz. Music CD sample rate 44.1 kHz. AM radio 535-1,605 kHz. Old computer CPU clocks: 4-200 MHz (4,000-200,000 kHz). Modern CPUs: 1-5 GHz (1,000,000-5,000,000 kHz).
Common Hz to kHz
| Hz | kHz |
|---|---|
| 100 Hz | 0.1 kHz |
| 1,000 Hz | 1 kHz |
| 5,000 Hz | 5 kHz |
| 20,000 Hz (top hearing) | 20 kHz |
| 44,100 Hz (CD audio) | 44.1 kHz |
| 100,000 Hz | 100 kHz |
| 540,000 Hz (AM radio low) | 540 kHz |
| 1,605,000 Hz (AM radio high) | 1,605 kHz |
Frequently Asked Questions
What's the highest pitch I can hear?
Adults: typically up to 16-18 kHz. Children: up to 20 kHz (the standard 'human hearing' upper limit). High-frequency hearing declines with age (presbycusis); above 20 kHz is 'ultrasound' territory used by bats, dolphins, ultrasound medical imaging.
Is 'Hz' the same as 'cps'?
Yes - 'cycles per second' was the older name for hertz (Hz). Renamed in honour of Heinrich Hertz (1857-1894). 'Hertz' is the SI standard unit; 'cps' appears in old technical documents but is obsolete now.
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