Convert Megahertz to Gigahertz
1 megahertz is 0.001 GHz. One megahertz is exactly 0.001 gigahertz.
One megahertz is 0.001 gigahertz. To convert megahertz to gigahertz, multiply by 0.001; to go the other way, divide by 0.001 or multiply by 1000. The factor is exact rather than rounded: it follows from NIST Special Publication 811. A million hertz.
Factor checked against the defining standard · How we check
- Megahertz × 0.001
1 * 0.0010.001 GHz
1 megahertz in every frequency unit
| Unit | Value | Exact factor |
|---|---|---|
| hertz | 1,000,000 Hz | × 1,000,000 |
| kilohertz | 1,000 kHz | × 1,000 |
| megahertz (as entered) | 1 MHz | — |
| gigahertz | 0.001 GHz | × 0.001 |
| terahertz | 0.000001 THz | × 0.000001 |
| revolutions per minute | 60,000,000 rpm | × 60,000,000 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert megahertz to gigahertz? The converter and the working
- 1.Take the measurement in megahertz.
- 2.Multiply by 0.001 — that is how many gigahertz fit in one megahertz.
- 3.To go back the other way, divide by 0.001, or multiply by 1000.
Worked example: 25 megahertz to gigahertz
- Formula
- MHz × 0.001 = GHz
- Arithmetic
- 25 × 0.001 = 0.03 GHz
- Answer
- 25 MHz = 0.03 GHz
The factor is exact, so this figure is exact too — only the display is rounded.
Megahertz to gigahertz conversion table
| Megahertz | Gigahertz |
|---|---|
| 1 MHz | 0.001 GHz |
| 2 MHz | 0.002 GHz |
| 3 MHz | 0.003 GHz |
| 4 MHz | 0.004 GHz |
| 5 MHz | 0.01 GHz |
| 6 MHz | 0.01 GHz |
| 7 MHz | 0.01 GHz |
| 8 MHz | 0.01 GHz |
| 9 MHz | 0.01 GHz |
| 10 MHz | 0.01 GHz |
| 12 MHz | 0.01 GHz |
| 15 MHz | 0.02 GHz |
| 20 MHz | 0.02 GHz |
| 25 MHz | 0.03 GHz |
| 50 MHz | 0.05 GHz |
| 100 MHz | 0.1 GHz |
| 200 MHz | 0.2 GHz |
| 300 MHz | 0.3 GHz |
| 500 MHz | 0.5 GHz |
| 1000 MHz | 1 GHz |
| 2000 MHz | 2 GHz |
| 5000 MHz | 5 GHz |
| 10000 MHz | 10 GHz |
What is a megahertz?
A million hertz. FM radio sits at 88 to 108 MHz, and a processor clock was quoted here until the late 1990s.
What is a gigahertz?
A billion hertz. Wi-Fi runs at 2.4 and 5 GHz, and a processor clock has been quoted in these since about 2000 — a 3.5 GHz core starts a new cycle every 286 picoseconds.
How many gigahertz are in a megahertz?
One megahertz is 0.001 gigahertz, exactly. Going the other way, one gigahertz is 1000 megahertz. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every frequency unit here
The whole group — 6 units with their symbols and the size of each one in hertzs — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a megahertz.
Source: NIST Special Publication 811 — the hertz, and SI prefixes
Cite this page
- APA
- Rule Calculator. (2026). Convert Megahertz to gigahertz. Rule Calculator. https://rulecalculators.com/convert/megahertz-to-gigahertz
- MLA
- "Convert Megahertz to gigahertz." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/megahertz-to-gigahertz.
- Chicago
- Rule Calculator. "Convert Megahertz to gigahertz." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/megahertz-to-gigahertz.
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Questions people actually ask
- How many gigahertz are in a megahertz?
- 0.001. A billion hertz. Wi-Fi runs at 2.4 and 5 GHz, and a processor clock has been quoted in these since about 2000 — a 3.5 GHz core starts a new cycle every 286 picoseconds.
- How do I convert gigahertz back to megahertz?
- Divide by 0.001, or multiply by 1000 — they are the same operation.
Other frequency conversions
Gigahertz to megahertz — the same conversion the other way.