Gigahertz is 1000000000 hertz units.
Gigahertz to Megahertz Converter — GHz to MHz
Convert Gigahertz (GHz) to Megahertz (MHz) using the exact conversion factor (1 gigahertz = 1,000 megahertz). See the formula, worked examples, and conversion table.
Gigahertz to Megahertz converter
Converter
Scientific Units Converter
Convert SI derived units, scientific notation-friendly units, atomic units, and lab measurements.
Context values
Some unit families need one extra value for a physically accurate result.
Megahertz is 1000000 hertz units.
Result = input x 1e+9 / 1e+6.
Frequency units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gigahertz to Megahertz
Gigahertz and Megahertz are both scientific-measurement units, spanning everything from atomic and laboratory scales to astronomical distances — the kind of conversion that comes up constantly in physics, chemistry, and astronomy when a result needs to move between conventions used in different subfields. Specifically: Gigahertz is 1000000000 hertz units, and megahertz is 1000000 hertz units.
Formula
megahertz = gigahertz × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 gigahertz equals 1000000000 base units, and 1 megahertz equals 1000000 base units, so dividing one by the other gives the direct gigahertz-to-megahertz factor of 1000.
Simple example
1 GHz × 1000 = 1,000 MHz
1 gigahertz = 1,000 megahertz.
Real-world example
10 GHz × 1000 = 10,000 MHz
10 gigahertz = 10,000 megahertz.
Conversion table
| Gigahertz (GHz) | Megahertz (MHz) |
|---|---|
| 0.001 GHz | 1 MHz |
| 0.01 GHz | 10 MHz |
| 1 GHz | 1,000 MHz |
| 10 GHz | 10,000 MHz |
| 100 GHz | 100,000 MHz |
| 1,000 GHz | 1,000,000 MHz |
Reverse conversion: Megahertz to Gigahertz
1 MHz × 0.001 = 0.001 GHz
1 megahertz = 0.001 gigahertz.
gigahertz = megahertz × 0.001
For a page dedicated to this direction, see Megahertz to Gigahertz.
Understanding the Gigahertz (GHz)
Gigahertz is 1000000000 hertz units.
Understanding the Megahertz (MHz)
Megahertz is 1000000 hertz units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megahertz are in 1 gigahertz?
1 gigahertz equals 1,000 megahertz, using the exact defined conversion factor rather than an estimate.
How do I convert gigahertz to megahertz?
Multiply the gigahertz value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert megahertz back to gigahertz?
Use the reverse factor: 1 megahertz equals 0.001 gigahertz. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigahertz?
Gigahertz (GHz) is a unit of scientific units.
What is a megahertz?
Megahertz (MHz) is a unit of scientific units.
Is the gigahertz to megahertz conversion exact?
Yes. Both gigahertz and megahertz are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Why does this category span everything from atomic to astronomical scales?
Scientific work spans an enormous range of physical scales, from atomic distances (measured in angstroms or atomic mass units) to interstellar distances (measured in astronomical units or parsecs), so this category groups SI-derived and scale-specific units that researchers commonly need to convert between within their field.