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Frequency Converter

Convert frequency between hertz, kilohertz, megahertz, gigahertz, terahertz, and RPM. Type in any field to update all others instantly.

Converter Tools Runs locally No data sent
HzkHzMHzGHzRPMbrowser only
Frequency
Hertz
Hz
Kilohertz
kHz
Megahertz
MHz
Gigahertz
GHz
Terahertz
THz
RPM
rpm
Quick examples
Frequency reference
ReferenceHzkHzMHz
Mains AC power (US)600.060.00006
Middle C (musical note)261.630.262—/td>
AM radio band535000—605000535—6050.535—.6
FM radio band87500000—0800000087500—0800087.5—08
Wi-Fi 2.4 GHz240000000024000002400
CPU 3 GHz300000000030000003000

What is a Frequency Converter?

A frequency converter translates cycles-per-second (hertz) between metric prefixes and related units. Hertz (Hz) = one cycle per second. Kilohertz (kHz), megahertz (MHz), gigahertz (GHz), and terahertz (THz) are powers of 1000. RPM (revolutions per minute) is used in mechanical systems and converts to Hz by dividing by 60.

How to Use Frequency Converter

  1. Type a frequency value into any field (Hz, kHz, MHz, GHz, THz, or RPM).
  2. All other fields update instantly.
  3. Use quick example buttons for common reference frequencies.
  4. Click Clear to reset all fields.

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Frequency in Everyday Life ▾
Example
Input 2.4 GHz
Output 2,400,000,000 Hz / 2,400,000 kHz / 2400 MHz / 0.0024 THz
Common Use Cases
  • Electronics: comparing signal frequencies
  • Audio: musical note frequency lookup
  • Computing: CPU and memory clock speed conversion
  • Radio: AM/FM/Wi-Fi frequency band reference
Frequently Asked Questions
How many Hz in 1 MHz?

1 MHz = 1,000,000 Hz.

How do I convert RPM to Hz?

Divide RPM by 60. For example, 3000 RPM = 50 Hz.

What is the frequency of mains AC power?

In North America and some of Asia: 60 Hz. In Europe, Africa, Asia, and Australia: 50 Hz.

What frequency is Wi-Fi?

Wi-Fi uses 2.4 GHz and 5 GHz bands. Newer Wi-Fi 6E also uses 6 GHz.