Frequency Hz ↔ kHz ↔ MHz ↔ GHz Converter

Bidirectional conversion among Hz / kHz / MHz / GHz / THz.

Inputs

Result

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General calculation reads

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Scientific calculator (Casio fx-991EX)
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How to use this calculator

  • Enter the frequency value and unit.
  • Read all five-orders-of-magnitude representations.

About this calculator

Frequency conversions are pure decimal shifts. 1 kHz = 1,000 Hz; 1 MHz = 1,000 kHz; etc. Useful when reading specs across domains: audio (Hz/kHz), radio (MHz), microwave/CPU (GHz), light (THz).

Frequently asked

AM vs FM radio bands?+
AM: 540-1700 kHz. FM: 88-108 MHz. WiFi: 2.4 GHz and 5 GHz.
Hearing range?+
20 Hz to 20 kHz at birth, declining to ~15 kHz in adults. Above ~20 kHz is "ultrasound".
Why is CPU clock in GHz?+
Modern processors run cycles billions of times per second. 3 GHz = 3 billion cycles per second.
Why do radio bands have specific labels?+
ITU regulatory convention. Different bands behave differently for propagation (HF bounces off ionosphere, VHF doesn't).
kbps vs kHz?+
Different things — kbps is data rate (kilobits per second), kHz is frequency. They're related by Nyquist but distinct units.

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