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Convert gigahertz to megahertz
Instant, accurate GHz → MHz conversion with a live converter, table and formula.
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1 gigahertz = 1000 megahertz
1 megahertz = 0.001 gigahertz
gigahertz to megahertz table
| gigahertz (GHz) | megahertz (MHz) |
|---|---|
| 0.5 | 500 |
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 100000 |
| 500 | 500000 |
| 1000 | 1000000 |
Formula
megahertz = gigahertz × 1000.
Example
10 gigahertz = 10000 megahertz.
What is a gigahertz?
A gigahertz (GHz) is 1,000,000,000 Hz — CPU clock speeds.
What is a megahertz?
A megahertz (MHz) is 1,000,000 Hz.
Real-world reference points
Mains power hums at 50/60 Hz; concert pitch A is 440 Hz; CPUs run in the GHz range.
| Reference | gigahertz | megahertz |
|---|---|---|
| Mains electricity (50 Hz regions) | 0 GHz | 0.00005 MHz |
| Concert pitch A4 | 0 GHz | 0.00044 MHz |
| FM radio (~100 MHz) | 0.1 GHz | 100 MHz |
| Modern CPU (3.5 GHz) | 3.5 GHz | 3,500 MHz |
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 megahertz in a gigahertz?+
1 gigahertz = 1000 megahertz.
How do I convert gigahertz to megahertz?+
Enter the value in the gigahertz box above and the megahertz value appears instantly. You can also type in the megahertz box to convert the other way.
Is this GHz to MHz converter free?+
Yes — it is 100% free, needs no sign-up, and runs entirely in your browser.