All Frequency Units

How to Convert Frequency Units?

Frequency measures the number of cycles or oscillations per unit of time. This converter uses standard SI prefixes to convert between hertz, kilohertz, megahertz, gigahertz, and revolutions per minute.

Enter a value, select your source unit, and choose the target unit. The converter displays all unit equivalents simultaneously for easy reference.

Units

Hertz (Hz)

The hertz is the SI unit of frequency, equal to one cycle per second. Named after Heinrich Hertz, it's used for measuring sound frequencies (human hearing ranges from 20 Hz to 20,000 Hz), electrical signals, and processor clock speeds.

Kilohertz (kHz)

Equal to 1,000 hertz, the kilohertz is commonly used for audio frequencies and AM radio broadcasts. Audio sampling rates are often expressed in kHz, such as 44.1 kHz for CD-quality audio or 48 kHz for professional video.

Megahertz (MHz)

Equal to 1,000,000 hertz, the megahertz measures FM radio frequencies (88-108 MHz), early computer processor speeds, and wireless communication bands. Wi-Fi operates at 2,400 MHz (2.4 GHz) and 5,000 MHz (5 GHz).

Gigahertz (GHz)

Equal to 1,000,000,000 hertz, the gigahertz is the standard unit for modern processor speeds. Current CPUs operate between 2-5 GHz, while 5G cellular networks use frequencies from 0.6 to 39 GHz.

Revolutions Per Minute (RPM)

RPM measures rotational frequency, counting complete rotations per minute. Hard drives spin at 5,400-7,200 RPM, car engines idle at 600-1,000 RPM, and washing machines spin at 800-1,600 RPM during the final cycle.

Common Frequency Conversions