* Frequency measures how often something repeats in a given time period. It's typically used to describe cycles per second (Hertz - Hz).
* Kilohertz (kHz) is a larger unit of frequency, equal to 1,000 Hertz (1 kHz = 1,000 Hz).
Examples of frequencies in kilohertz:
* Radio waves: Many AM radio stations broadcast in the kHz range.
* Audio signals: The human ear can hear sound frequencies from about 20 Hz to 20 kHz.
* Computer processors: The speed of some computer processors is measured in GHz (gigahertz), which is 1,000 kHz.
In summary: Kilohertz is simply a way to express frequency that's easier to use when dealing with large numbers of cycles per second.