Gigahertz (GHz)

Definition

One billion hertz (10⁹ Hz).

History

The gigahertz is one billion hertz, reached by processors and wireless systems as electronics grew faster. Modern chips and Wi-Fi operate at gigahertz frequencies.

Where it is used

Gigahertz describe CPU clock speeds and Wi-Fi and mobile radio bands.

Typical uses include CPU and Wi-Fi, processor speeds.

Conversion pages

These pages convert gigahertz to or from another unit in frequency.

No conversion pages use this unit yet.

Other Frequency units

• Hertz (Hz)
• Kilohertz (kHz)
• Megahertz (MHz)
• Revolution per minute (rpm)

Sources

• BIPM SI BIPM SI Brochure (2019); ISO 80000-3 · Dataset reviewed Nov 11, 2026