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Convert megahertz to gigahertz
Instant, accurate MHz → GHz conversion with a live converter, table and formula.
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1 megahertz = 0.001 gigahertz
1 gigahertz = 1000 megahertz
megahertz to gigahertz table
| megahertz (MHz) | gigahertz (GHz) |
|---|---|
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 500 | 0.5 |
| 1000 | 1 |
Formula
gigahertz = megahertz × 0.001.
Example
10 megahertz = 0.01 gigahertz.
What is a megahertz?
A megahertz (MHz) is 1,000,000 Hz.
What is a gigahertz?
A gigahertz (GHz) is 1,000,000,000 Hz — CPU clock speeds.
Real-world reference points
Mains power hums at 50/60 Hz; concert pitch A is 440 Hz; CPUs run in the GHz range.
| Reference | megahertz | gigahertz |
|---|---|---|
| Mains electricity (50 Hz regions) | 0.00005 MHz | 0 GHz |
| Concert pitch A4 | 0.00044 MHz | 0 GHz |
| FM radio (~100 MHz) | 100 MHz | 0.1 GHz |
| Modern CPU (3.5 GHz) | 3,500 MHz | 3.5 GHz |
Mistakes to avoid with frequency conversions
- Confusing MHz with Mbps — clock frequency and data throughput are different things.
- Assuming higher GHz always means faster: per-clock work and core counts matter as much.
- Mixing 50 Hz and 60 Hz appliance ratings across regions — motors and clocks care.
Frequently asked questions
How many gigahertz in a megahertz?+
1 megahertz = 0.001 gigahertz.
How do I convert megahertz to gigahertz?+
Enter the value in the megahertz box above and the gigahertz value appears instantly. You can also type in the gigahertz box to convert the other way.
Is this MHz to GHz converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.