ToolWren › Frequency

Frequency Converter

Convert frequency between hertz, kilohertz, megahertz, gigahertz and revolutions per minute.

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How to use the Frequency

Enter the number you want to convert in the Value field.
Pick the unit you're converting From and the unit you want To.
Read the converted result, or use ⇅ to swap the two units.
Check the All units table to see your value expressed in every supported unit at once.

Privacy: this tool runs entirely in your browser. Your input is never sent to, received by, or stored on any server — there are no uploads and no tracking of what you enter.

About Frequency

Common frequency units

Hertz and its multiples (kHz, MHz, GHz) measure cycles per second — used for sound, radio and CPU clocks. RPM measures rotations per minute.

Key conversions

1 kHz = 1000 Hz, 1 MHz = 1,000,000 Hz, 1 GHz = 1 billion Hz. 1 Hz = 60 RPM.

Where it helps

Audio and radio engineering, CPU and bus speeds, and rotating machinery.

Frequently asked questions

How many Hz in a MHz?

One million (1,000,000) hertz.

How is RPM related to Hz?

1 Hz equals 60 RPM (one cycle per second is 60 per minute).

What is a GHz?

One billion hertz, used for CPU and radio frequencies.