kHzes

Kilohertz (symbol kHz) is a unit of frequency equal to 1,000 hertz. The plural form is normally written as kHz, the same as the singular, or as kilohertz when spelled out. The form "kHzes" is not standard in technical writing and may be considered incorrect; when describing multiple frequencies one would use "kHz" or "kilohertz" rather than a plural with -es.

One kilohertz equals 1,000 cycles per second. In general, kilohertz sit in the lower part of the radio and audio spectrum. They are used to describe signals, clocks, and communication bands that operate in the thousands-per-second range.

Common contexts include: Audio engineering, where audible frequencies extend to about 20 kHz; sampling rates such as 44.1 kHz create digital representations up to 22.05 kHz. Radio broadcasting uses kilohertz for medium-wave AM bands; international standards allocate portions of the 530–1710 kHz range to AM broadcasting in many regions.

Electronics often uses kilohertz for clocking and timing prior to higher-speed systems; modern microprocessors run at megahertz or gigahertz, but kHz circuits remain common in audio processing and older equipment.

Notation and conversion: When converting between Hz and kHz, divide by 1,000. For example, 3,500 Hz equals 3.5 kHz. In scientific and technical writing, the unit kHz is treated as a singular word and is not pluralized with -es.

See also: Hertz, Megahertz, Gigahertz, Radio frequency, Audio frequency.