Marks Calc
7 units

Frequency Converter

Convert between Hz, kHz, MHz, GHz, THz and rpm (revolutions per minute).

Common frequency conversions

FromEquivalent
1 Hz0.001 kHz · 1.0000e-6 MHz · 1.0000e-9 GHz · 1.0000e-12 THz · 60 rpm
5 Hz0.005 kHz · 5.0000e-6 MHz · 5.0000e-9 GHz · 5.0000e-12 THz · 300 rpm
10 Hz0.01 kHz · 1.0000e-5 MHz · 1.0000e-8 GHz · 1.0000e-11 THz · 600 rpm
100 Hz0.1 kHz · 0.0001 MHz · 1.0000e-7 GHz · 1.0000e-10 THz · 6000 rpm
1000 Hz1 kHz · 0.001 MHz · 1.0000e-6 GHz · 1.0000e-9 THz · 60000 rpm

How the conversion works

1 Hz = 1 cycle/second. 1 rpm = 1/60 Hz. CPU/radio frequencies typically expressed in MHz or GHz.

When you'll use this converter

  • Radio and wireless (MHz, GHz)
  • Audio engineering (Hz, kHz)
  • CPU clock speed (GHz)
  • Motor and engine speed (rpm)

Frequently asked

How many Hz in 1 rpm?

1 rpm = 1/60 Hz ≈ 0.01667 Hz. So 3,000 rpm = 50 Hz.

What's the frequency range of human hearing?

Roughly 20 Hz to 20,000 Hz (20 kHz), reducing with age.