kHz

What is a Kilohertz?

Frequency Unit

Definition

A kilohertz (kHz) is a unit of frequency equal to 1,000 hertz.

History

The kilohertz became important with the development of radio broadcasting and telecommunications in the early 20th century.

Common Uses

  • AM radio frequencies
  • Audio sampling rates
  • Telecommunications
  • Ultrasound frequencies

Fun Facts

💡

AM radio broadcasts between 530-1700 kHz

💡

CD audio is sampled at 44.1 kHz

💡

Dog whistles produce sounds around 20-25 kHz

All Kilohertz Conversions