Like hertz, kilohertz is used to measure frequency, or cycles per second. Since one hertz is one cycle per second, one kilohertz is equal to 1,000 cycles per second. Kilohertz is commonly used to measure the frequencies of sound waves, since the audible spectrum of sound frequencies is between 20 Hz and 20 kHz.

What is measured in kilohertz?

A kilohertz (kHz) is a unit of frequency equal to one thousand cycles per second. Hertz measure cycles per second, and kilo means one thousand. Thus five-kilohertz is five thousand cycles per second. kHz is most commonly used in reference to radio frequencies and audio signal processing.

What is the difference between hertz and kilohertz?

One hertz is the number of times that a pattern - such as a digital pulse or analog sound wave - repeats each second. One hertz, or Hz, means that the frequency is one cycle per second. Kilohertz, or kHz, refers to how many thousands of cycles occur per second.