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Frequency
Gigahertz to Megahertz
Convert gigahertz (GHz) to megahertz (MHz). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 GHz = 1000 MHz
Gigahertz to Megahertz Conversion Table
Common values, ready to copy:
| gigahertz | megahertz |
|---|---|
| 1 GHz | 1000 MHz |
| 2 GHz | 2000 MHz |
| 5 GHz | 5000 MHz |
| 10 GHz | 10000 MHz |
| 25 GHz | 25000 MHz |
| 50 GHz | 50000 MHz |
| 100 GHz | 100000 MHz |
| 1,000 GHz | 1.0000e+6 MHz |
Formula
megahertz = gigahertz × 1000
Frequency uses the SI hertz (Hz, cycles per second). 1 kHz = 1,000 Hz; 1 MHz = 1 million Hz; 1 GHz = 1 billion Hz. RPM and BPM are both "cycles per minute": 60 RPM = 1 Hz.
About Gigahertz and Megahertz
Gigahertz (GHz): A billion hertz; the unit for modern CPU clock speeds and Wi-Fi/cellular frequencies. Common uses: Computer processor speeds (most CPUs are 2-5 GHz), Wi-Fi bands (2.4 and 5 GHz), 5G cellular, and microwave-band radio.
Megahertz (MHz): A million hertz; the unit for FM radio, older computer clock speeds, and microwave-band wireless. Common uses: FM radio (88-108 MHz), microcontroller clock speeds, ham radio, and some Wi-Fi specifications.
How the conversion works
Frequency uses the SI hertz (Hz, cycles per second). 1 kHz = 1,000 Hz; 1 MHz = 1 million Hz; 1 GHz = 1 billion Hz. RPM and BPM are both "cycles per minute": 60 RPM = 1 Hz.
The exact relationship is megahertz = gigahertz × 1000, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between gigahertz and megahertz comes up wherever frequency measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.