Kilohertz (kHz)

The kilohertz is 1,000 hertz. It is used for audio (the upper limit of human hearing is about 20 kHz), AM radio (530–1,700 kHz in the Americas) and sampling rates (44.1 kHz CD audio).

Convert kilohertz to any frequency unit

1 kilohertz = 1,000 hertz

Quick facts

Unit
Kilohertz
Symbol
kHz
Measures
Frequency
System
Hertz
Equals
1,000 hertz
Definition
1,000 Hz.

1 kilohertz in other units

Hertz1,000 Hz
Gigahertz0.000001 GHz
Megahertz0.001 MHz
Revolutions per minute60,000 rpm
Beats per minute60,000 bpm
Terahertz1 × 10-9 THz
Cycles per second1,000 cps

What is a kilohertz?

The kilohertz is 1,000 hertz. It is used for audio (the upper limit of human hearing is about 20 kHz), AM radio (530–1,700 kHz in the Americas) and sampling rates (44.1 kHz CD audio).

Where the kilohertz sits among frequency units

The kilohertz is number 17 of 24 on our scale of frequency units, ordered from smallest to largest.

Kilohertz in real life

  • CD audio is sampled at 44.1 kHz
  • AM radio stations broadcast at 530–1,700 kHz
  • Bats echolocate at 20–120 kHz

Top kilohertz conversions

Common amounts of kilohertz

Convert kilohertz to all 23 other units

Hertz

Cycles & rotation

Per unit of time

Convert to kilohertz

Frequently asked questions

What is a kilohertz?

The kilohertz is 1,000 hertz. It is used for audio (the upper limit of human hearing is about 20 kHz), AM radio (530–1,700 kHz in the Americas) and sampling rates (44.1 kHz CD audio).

How is the kilohertz defined?

1,000 Hz.

How many hertz are in a kilohertz?

One kilohertz equals 1,000 hertz.

How many gigahertz are in a kilohertz?

One kilohertz equals 0.000001 gigahertz.

How many megahertz are in a kilohertz?

One kilohertz equals 0.001 megahertz.