Frequency Converter
Convert between hertz, kilohertz, megahertz, gigahertz, and RPM.
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Frequency measures cycles per second. Hz is the SI unit. kHz (10³), MHz (10⁶), GHz (10⁹). RPM for rotating machinery.
Electronics and Computing
CPU speeds in GHz (3.5 GHz = 3.5B cycles/s). Radio: kHz (AM) to GHz (Wi-Fi, 5G).
Audio Frequency
Human hearing: 20 Hz – 20 kHz. A4 = 440 Hz, middle C = 261.6 Hz.
How to Use This Calculator
- Select 'Frequency'
Choose the category from the dropdown.
- Select your source unit
Pick the unit you're converting from.
- Enter the value
Type the number. Results update instantly.
- Select your target unit
Choose the unit you need.
Applications
Electronics and Telecom
Wi-Fi: 2.4/5 GHz. 5G: 600 MHz – 39 GHz. Converting is essential for wireless equipment.
Audio and Music
CD quality: 44.1 kHz sampling. EQ frequencies in Hz/kHz.
Machinery and Motors
3,000 RPM = 50 Hz. Grid: 50 Hz (AU) / 60 Hz (US).
Frequently Asked Questions
How do you convert Hz to kHz?
Divide by 1,000. 5,000 Hz = 5 kHz.
How do you convert RPM to Hz?
Divide by 60. 3,600 RPM = 60 Hz.
What frequency is Wi-Fi?
2.4 GHz and 5 GHz. 5 GHz is faster but shorter range.