MHz to GHz – Megahertz to Gigahertz Converter

📏 Megahertz to Gigahertz Converter

Convert megahertz (MHz) to gigahertz (GHz) instantly, with the formula, a worked example and a conversion table.

Quick answer: 1 megahertz (MHz) = 0.001 gigahertz (GHz). Formula: GHz = MHz × 0.001.

Updated October 2026 · Free · No sign-up · Works on any device

Value

From

1 MHz =

0.001 GHz

GHz = MHz × 0.001

1 megahertz = 0.001 GHz · GHz to MHz

Megahertz to Gigahertz conversion table

Megahertz (MHz)	Gigahertz (GHz)
0.1 MHz	0.0001 GHz
0.5 MHz	0.0005 GHz
1 MHz	0.001 GHz
2 MHz	0.002 GHz
3 MHz	0.003 GHz
5 MHz	0.005 GHz
10 MHz	0.01 GHz
20 MHz	0.02 GHz
25 MHz	0.025 GHz
50 MHz	0.05 GHz
100 MHz	0.1 GHz
1,000 MHz	1 GHz

Other frequency conversions

MHz to Hz MHz to kHz MHz to GHz MHz to rpm

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How to convert megahertz to gigahertz

Multiply the number of megahertz by 0.001 to get gigahertz: GHz = MHz × 0.001.

Example: 5 MHz = 0.005 GHz.

The megahertz (MHz) and the gigahertz (GHz) are both units of frequency. Need the opposite direction? Use the GHz to MHz converter.

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Metric and imperial units

The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.

Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.

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Frequently asked questions

How many gigahertz are in a megahertz?

1 megahertz = 0.001 gigahertz.

How do I convert megahertz to gigahertz?

Use the formula GHz = MHz × 0.001. For example, 5 MHz = 0.005 GHz.

How do I convert gigahertz back to megahertz?

1 gigahertz = 1,000 megahertz. Use the GHz to MHz converter linked on this page.

Are these conversions exact?

Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.