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Frequency Converter

Instantly convert frequency between hertz, kilohertz, megahertz, gigahertz, RPM, BPM, and radians per second.

Use a comma or period as the decimal separator; do not use thousands separators.

All units

SI frequency

Use as target unit: Nanohertz
Nanohertz (nHz)
1,000,000,000
Use as target unit: Microhertz
Microhertz (µHz)
1,000,000
Use as target unit: Millihertz
Millihertz (mHz)
1,000
Use as target unit: Hertz
Hertz (Hz)
From
1
Use as target unit: Kilohertz
Kilohertz (kHz)
0.001
Use as target unit: Megahertz
Megahertz (MHz)
0.000001
Use as target unit: Gigahertz
Gigahertz (GHz)
1e-9
Use as target unit: Terahertz
Terahertz (THz)
1e-12
Use as target unit: Petahertz
Petahertz (PHz)
1e-15

Events and tempo

Use as target unit: Cycles per day
Cycles per day (cpd)
86,400
Use as target unit: Cycles per hour
Cycles per hour (cph)
3,600
Use as target unit: Cycles per minute
Cycles per minute (cpm)
60
Use as target unit: Beats per minute
Beats per minute (BPM)
60
Use as target unit: Cycles per second
Cycles per second (cps)
1

Rotation

Use as target unit: Revolutions per minute
Revolutions per minute (rpm)
To
60
Use as target unit: Revolutions per second
Revolutions per second (r/s)
1

Angular frequency

Use as target unit: Degrees per second
Degrees per second (°/s)
360
Use as target unit: Radians per second
Radians per second (rad/s)
6.28318531
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Good to know

The frequency converter converts directly in your browser between SI frequency, angular frequency, rotation, and events/tempo. 1 Hz equals one complete periodic event per second; angular frequency ω = 2πf is larger by a factor of 2π than plain frequency.

Typical searches include Hz to kHz, MHz to GHz, and convert frequency. Calculation runs locally in the browser. 60 rpm equals 1 Hz when one revolution counts as a cycle, and 60 BPM equals 1 Hz when one beat counts as an event; signal work may also require sample rate, bandwidth, and tolerances.

Typical use cases

Convert signal frequencies between orders of magnitude

Convert Hz to kHz, MHz, or GHz, for example for processor clocks, radio frequencies, or audio signals.

Convert rotational speed into frequency

Convert revolutions per minute into hertz, for example for motors, hard drives, or rotating machine parts.

Tips for better results

Don't confuse frequency and angular frequency

ω (rad/s) is larger than f (Hz) by a factor of 2π — using the correct quantity matters in physics formulas.

Period duration belongs to a different calculator

The period is the reciprocal of frequency, but is not calculated directly here — use a dedicated tool for that.

How it works

Step by step

  1. 1

    Enter value and source unit

    Enter the frequency value and choose the source unit.

  2. 2

    Choose the target unit

    Choose the target unit from one of the four groups.

  3. 3

    Copy the result

    Copy one or all results for further use.

Features

Four unit groups

SI frequency, angular frequency, rotation, and events/tempo are separated.

Local conversion

Calculation happens directly in the browser, without transmission to a server.

Event-based units such as BPM and rpm

Also convert everyday frequency figures such as revolutions per minute or beats per minute.

Frequently asked questions

What's the difference between frequency and angular frequency?

Frequency f is measured in hertz, angular frequency ω in rad/s and is larger by a factor of 2π (ω = 2πf).

Are my inputs uploaded?

No. Conversion runs entirely locally in the browser.

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