Gigahertz to Megahertz Converter
Converts gigahertz to megahertz (GHz to MHz) and back. The conversion factor is shown below every result.
How to Convert Gigahertz to Megahertz
What Is a Gigahertz?
A gigahertz (GHz), commonly seen in CPU speeds and radio frequencies, equals 1,000,000,000 hertz.
What Is a Megahertz?
A megahertz (MHz), an SI frequency unit, equals 1,000,000 hertz.
Common Gigahertz to Megahertz Reference Points
Real-world reference values for quick sanity checks.
| Item | Gigahertz (GHz) | Megahertz (approx.) |
|---|---|---|
| A modern CPU clock speed (approx.) | 3.5 GHz | 3500 MHz |
| 5G mid-band spectrum (approx.) | 3.7 GHz | 3700 MHz |
| Reference values are illustrative approximations for common items, not measured specifications. | ||
Gigahertz to Megahertz Conversion Table
| Gigahertz (GHz) | Megahertz (MHz) |
|---|---|
| 0.5 GHz | 500 MHz |
| 1 GHz | 1000 MHz |
| 2 GHz | 2000 MHz |
| 3.5 GHz | 3500 MHz |
| 5 GHz | 5000 MHz |
| 6 GHz | 6000 MHz |
| Source: NIST SI prefix guidance (1 GHz = 1,000 MHz exactly) | |
Frequently Asked Questions
How do I convert GHz to MHz?
Multiply the GHz value by 1,000. For example, 3.2 GHz × 1,000 = 3,200 MHz.
Why do CPU speeds get quoted in GHz instead of MHz today?
Modern processors run fast enough that GHz gives a more convenient number to read; older, slower processors from decades past were commonly quoted in MHz because their clock speeds were under 1,000 MHz.
Is 1 GHz always 1,000 MHz exactly?
Yes, with no rounding, since both are decimal SI multiples of the hertz.
Related Frequency Converters
A good measuring tool marked in both GHz and MHz removes the guesswork at the point of use.