How to Convert Megahertz to Gigahertz (MHz to GHz)
Frequency conversions apply to radio stations, Wi-Fi bands and processor speeds. This guide shows how to convert megahertz into gigahertz by hand, with examples and a quick-reference table.
The conversion
To convert megahertz to gigahertz, multiply the value by 0.001. To go the other way, divide by the same number (or multiply by 1,000). For a quick estimate, multiply by about 0.001.
Gigahertz = megahertz × 0.001
Worked examples
- 3 MHz = 0.003 GHz
- 12.5 MHz = 0.0125 GHz
- 75 MHz = 0.075 GHz
Megahertz to Gigahertz table
| Megahertz | Gigahertz |
|---|---|
| 1 MHz | 0.001 GHz |
| 2 MHz | 0.002 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 |
| 250 MHz | 0.25 GHz |
| 500 MHz | 0.5 GHz |
| 1,000 MHz | 1 GHz |
Common questions
Is MHz to GHz exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Gigahertz to Megahertz converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Background
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Megahertz to Gigahertz Converter or browse all frequency converters.
Run your own numbers: Megahertz to Gigahertz Converter