Convert megahertz to gigahertz
Converting megahertz to gigahertz is a common frequency task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 MHz equals 0.001 GHz, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert megahertz to gigahertz
To convert megahertz to gigahertz, multiply the number of megahertz by 0.001. For example, 10 MHz × 0.001 = 0.01 GHz.
GHz = MHz × 0.001
- Write down the value in megahertz you want to convert.
- Multiply it by 0.001 (the exact MHz→GHz factor).
- The result is your value in gigahertz. Check it below with the converter or the table.
Conversion table
Common values of megahertz and their equivalents in gigahertz:
| MHz | GHz |
|---|---|
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 4 | 0.004 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
About these units
Megahertz (MHz). A megahertz is one million cycles per second. FM radio occupies 88–108 MHz, and older CPU clocks, memory buses and shortwave bands are measured in MHz.
Gigahertz (GHz). A gigahertz is one billion cycles per second. Modern processors clock at several GHz, and Wi-Fi, 5G and radar systems operate in the gigahertz range.
Frequently asked questions
How do I convert megahertz to gigahertz?
To convert megahertz to gigahertz, multiply the number of megahertz by 0.001. For example, 10 MHz × 0.001 = 0.01 GHz. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many gigahertz are in 1 megahertz?
1 MHz = 0.001 GHz. That is the fixed relationship used by this converter and by international standards.
How many megahertz are in 1 gigahertz?
1 GHz = 1,000 MHz. If you are converting in the opposite direction, use our Gigahertz to Megahertz converter for the dedicated table and FAQ.
Is the megahertz to gigahertz conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.001 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is megahertz used for?
A megahertz is one million cycles per second. FM radio occupies 88–108 MHz, and older CPU clocks, memory buses and shortwave bands are measured in MHz.