Frequency Converter

Convert frequencies between hertz, kilohertz, megahertz, gigahertz and terahertz, and rotational speeds in revolutions per minute (RPM) and radians per second.

  • Number → Converted value, Full conversion table
  • Runs in your browser
  • Free, no sign-up
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How to use Frequency Converter

  1. Type the value you want to convert.
  2. Choose the unit you are converting from and the unit you want.
  3. Read the result instantly – every other unit is listed in the table below it.
  4. Use “Copy” to copy the result, or “Swap” to convert the other way.

Common frequency conversions

FromEquals
1 Revolutions per minute (rpm)0.01666666667 Hz (Hertz)
1 Hertz (Hz)60 rpm (Revolutions per minute)
1 Megahertz (MHz)1,000 kHz (Kilohertz)
1 Gigahertz (GHz)1,000 MHz (Megahertz)
1 Radians per second (rad/s)9.549296586 rpm (Revolutions per minute)

Revolutions per minute to Hertz table

Revolutions per minute (rpm)Hertz (Hz)
1 rpm0.01666666667 Hz
2 rpm0.03333333333 Hz
5 rpm0.08333333333 Hz
10 rpm0.1666666667 Hz
20 rpm0.3333333333 Hz
25 rpm0.4166666667 Hz
50 rpm0.8333333333 Hz
100 rpm1.666666667 Hz
500 rpm8.333333333 Hz
1,000 rpm16.66666667 Hz

Units in this converter

Hertz (Hz), Kilohertz (kHz), Megahertz (MHz), Gigahertz (GHz), Terahertz (THz), Revolutions per minute (rpm), Radians per second (rad/s).

Examples

  • 3,000 rpm = 50 Hz
  • 2.4 GHz = 2,400 MHz
  • 1 Hz = 6.2832 rad/s

Supported formats

InputNumber
OutputConverted value, Full conversion table
ProcessingOn your device, in the browser (no upload)

Limitations to know

  • Converting frequency to wavelength needs the wave speed and is not included.
  • Results are shown to up to 10 significant digits; extremely large or small values switch to scientific notation (e.g. 1.5e-12).

Privacy: Frequency Converter runs entirely in your web browser. Your Number data is not uploaded, stored or shared, and nothing about its contents is sent to analytics.

Frequently asked questions

How do I convert RPM to Hz?

Divide by 60. For example, 1,800 rpm ÷ 60 = 30 Hz.

What is the difference between Hz and rad/s?

Hz counts full cycles per second; rad/s measures angle per second. One hertz equals 2π (about 6.283) rad/s.

References

Last updated · Maintained by the ZippyToolkit team