Frequency Converter

Convert Hertz, Kilohertz, Megahertz, Gigahertz, Terahertz, RPM, and More

Free online frequency converter for all common frequency units. Instantly convert between hertz, kilohertz, megahertz, and more with accuracy and ease.


What is a Frequency Converter?

A frequency converter is a tool that allows you to quickly and accurately convert between different units of frequency, such as hertz (Hz), kilohertz (kHz), megahertz (MHz), gigahertz (GHz), and more. Frequency measures the number of cycles, oscillations, or events per unit of time and is widely used in physics, electronics, telecommunications, and engineering.

Supported Frequency Units

  • Hertz (Hz): The base SI unit of frequency, defined as one cycle per second.
  • Kilohertz (kHz): 1,000 Hz. Used in radio frequencies and audio signals.
  • Megahertz (MHz): 1,000,000 Hz. Common in radio, television, and CPU clock speeds.
  • Gigahertz (GHz): 1,000,000,000 Hz. Used for microwave frequencies, modern CPUs, and high-speed communications.
  • Terahertz (THz): 1,000,000,000,000 Hz. Used in specialized imaging and cutting-edge telecommunications.
  • Petahertz (PHz): 1,000,000,000,000,000 Hz. Used in optical physics and certain electromagnetic phenomena.
  • Revolutions per minute (RPM): The number of complete rotations per minute, commonly used for motors and engines.
  • Revolutions per second (RPS): The number of complete rotations per second.
  • Cycles per second (cps): Equivalent to hertz, sometimes used in older documentation.
  • Beats per minute (BPM): Used in music and medicine to measure tempo or heart rate.

How to Use the Frequency Converter

  1. Enter the value you want to convert.
  2. Select the unit you are converting from.
  3. View instant conversions to all other supported units below.

Why Use ManyCalcs Frequency Converter?

  • Completely free and ad-free.
  • Supports all major frequency units.
  • Instant, accurate, and easy-to-use interface.
  • Mobile-friendly and accessible on any device.
  • Educational content for every unit.

Frequently Asked Questions

What is the difference between Hz and RPM?
Hertz (Hz) measures cycles per second, while RPM measures rotations per minute. 1 RPM equals 1/60 Hz.
How do I convert MHz to GHz?
1 GHz = 1,000 MHz. To convert from MHz to GHz, divide by 1,000.
What frequencies are used in common electronic devices?
FM radio typically uses 88-108 MHz, WiFi routers operate around 2.4 GHz or 5 GHz, and modern computer processors run at several GHz.
Is this frequency converter free?
Yes, the ManyCalcs frequency converter is 100% free and always will be.

For more information, see Frequency on Wikipedia.

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