What is a hertz?

Definition

Hz

The hertz (Hz) is the SI unit of frequency, equal to one cycle per second.

Unit system

SI

Convert hertz

Hertz → Kilohertz Hertz → Megahertz Hertz → Gigahertz Hertz → Terahertz Hertz → RPM Hertz → Revolutions/second Hertz → Radians/second Kilohertz → Hertz

All frequency units

Unit	Symbol	System
hertz	Hz	SI
kilohertz	kHz	SI
megahertz	MHz	SI
gigahertz	GHz	SI
terahertz	THz	SI
RPM	rpm	Mechanical
revolutions/second	rps	Mechanical
radians/second	rad/s	Scientific