← Toolz / Converters / Frequency Converter

Frequency Converter

Your inputs

RPM is revolutions per minute, so hertz is RPM divided by 60. Terahertz is included for infrared light and spectroscopy.

Live results

Auto-updates
Result visualization

Convert hertz, kilohertz, megahertz and gigahertz to RPM and terahertz — for audio, radio, processors, mains power and rotating machinery.

100% free · No sign-up · No daily limits · No watermarks · Processed in your browser — files never leave your device

UNDERSTAND YOUR RESULTS

Frequency Converter guide

Convert hertz, kilohertz, megahertz and gigahertz to RPM and terahertz — for audio, radio, processors, mains power and rotating machinery.

📖 From the blog: Converting frequency: hertz, kilohertz, gigahertz and RPM

How to use this tool

  1. Enter the value you want to convert.
  2. Choose the source and destination units. Use Swap to reverse them.
  3. Compare the live equivalents, then copy a result or download the table as CSV.

A worked example

A hard drive spinning at 5,400 RPM rotates 90 times every second — a frequency of 90 hertz.

What you can do with this tool

How it works

Result = input × source-unit factor ÷ destination-unit factor. All factors are relative to the same base unit; intermediate values are not rounded.

Frequently asked questions

Which unit definitions are used?

Hertz, Kilohertz, Megahertz, Gigahertz, RPM, Terahertz. Read the labels carefully: regional or decimal/binary variants are separate choices.

How do RPM and hertz relate?

Hertz is cycles per second and RPM is revolutions per minute, so divide RPM by 60: a 1,800 RPM motor spins at 30 Hz.