Gigahertz to Megahertz
A gigahertz is one billion hertz, the standard unit for modern CPU clock speeds and Wi-Fi frequency bands. A megahertz is one million hertz, used for FM radio frequencies and older CPU clock speeds. 1 GHz equals 1,000 MHz, so converting between them is a matter of multiplying by that fixed factor — type any value into the converter below and both sides update instantly as you type.
Both units belong to frequency, measured here against frequency's base unit (Hz) — every other frequency unit on this site converts through that same reference point, which is why the table below can also be read as a quick cross-check against nearby values.
Formula
MHz = GHz × 1,000
GHz = MHz × 0.001
Worked example: 5 GHz × 1,000 = 5,000 MHz.
Conversion table
| Gigahertz (GHz) | Megahertz (MHz) |
|---|---|
| 1 GHz | 1,000 MHz |
| 2 GHz | 2,000 MHz |
| 3 GHz | 3,000 MHz |
| 5 GHz | 5,000 MHz |
| 10 GHz | 10,000 MHz |
| 20 GHz | 20,000 MHz |
| 25 GHz | 25,000 MHz |
| 50 GHz | 50,000 MHz |
| 100 GHz | 100,000 MHz |
| 250 GHz | 250,000 MHz |
| 500 GHz | 500,000 MHz |
| 1,000 GHz | 1,000,000 MHz |
Frequently asked
- How many Megahertz in a gigahertz?
- 1 GHz equals 1,000 MHz.
- How do I convert Gigahertz to Megahertz?
- Multiply the value in GHz by 1,000 to get MHz. The converter above does this instantly as you type.
- Is the conversion exact?
- Yes — Gigahertz and Megahertz are both defined by a fixed conversion factor to frequency's base unit (Hz), so the result shown is exact to the precision displayed, not an approximation.