Megahertz to Gigahertz Converter
One Megahertz equals 0.001 Gigahertz (1 MHz = 0.001 GHz). Multiply a Megahertz value by 0.001 to get the equivalent in Gigahertz. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
GHz = MHz × 0.001
Multiply the Megahertz value by 0.001 to get the equivalent value in Gigahertz.
Example Conversions
1 Megahertz (MHz)
0.001 Gigahertz (GHz)
5 Megahertz (MHz)
0.005 Gigahertz (GHz)
10 Megahertz (MHz)
0.01 Gigahertz (GHz)
25 Megahertz (MHz)
0.025 Gigahertz (GHz)
100 Megahertz (MHz)
0.1 Gigahertz (GHz)
Conversion Table
| Megahertz (MHz) | Gigahertz (GHz) |
|---|---|
| 0.1 | 0.0001 |
| 0.5 | 0.0005 |
| 1 | 0.001 |
| 2 | 0.002 |
| 5 | 0.005 |
| 10 | 0.01 |
| 25 | 0.025 |
| 50 | 0.05 |
| 100 | 0.1 |
| 250 | 0.25 |
| 500 | 0.5 |
| 1000 | 1 |
How to Convert Manually
Use these steps to convert Megahertz values to Gigahertz without the calculator.
- Write down the value in Megahertz (MHz) that you want to convert.
- Multiply that value by 0.001.
- For example, 10 Megahertz × 0.001 = 0.01 Gigahertz.
- Label the result as Gigahertz (GHz).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Megahertz and one Gigahertz.
About Megahertz and Gigahertz
The megahertz is one million hertz. FM radio (87.5–108 MHz), older CPU clocks, and RAM speeds are quoted in megahertz. The gigahertz is one billion hertz. Modern CPU clock speeds, Wi-Fi bands (2.4/5/6 GHz), and mobile networks operate in gigahertz. One Megahertz equals 0.001 Gigahertz (1 MHz = 0.001 GHz). Megahertz to Gigahertz conversion comes up most often in FM radio frequencies and in RAM and bus speeds, typically when figures need restating for CPU clock speeds.
Precision and Rounding: Frequency conversions are exact decimal shifts except rpm and rps, which involve the factor 60. Audio and radio work round to convenient figures; clock signals, tuning, and rotating machinery balancing need the unrounded value.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Megahertz equals 0.015 Gigahertz.
15 MHz × 0.001 = 0.015 GHz
FAQ
How do I convert Megahertz to Gigahertz?
Multiply the Megahertz value by 0.001 to get the equivalent value in Gigahertz.
What is the formula for Megahertz to Gigahertz?
The formula is GHz = MHz × 0.001.
How many Gigahertz are in 1 Megahertz?
1 Megahertz equals 0.001 Gigahertz.
Can I convert Gigahertz back to Megahertz?
Yes. 1 Gigahertz equals 1000 Megahertz, and the related converter can reverse the calculation.
What are common names for Megahertz and Gigahertz?
Megahertz is shown as MHz and may also be searched as megahertz. Gigahertz is shown as GHz and may also be searched as gigahertz.
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