Formula
GHz to mHz conversion formula
Use this relationship for a direct conversion:
mHz = GHz x 1e12
Worked example
2 GHz = 2e12 mHz.
All SI prefix conversions are exact; rpm assumes each revolution is one complete cycle.
Frequency conversion
Convert Gigahertz to Millihertz
1 gigahertz (GHz) equals 1e12 millihertz (mHz). Enter any value below to convert from GHz to mHz.
Enter a value and choose units. Results update instantly.
1 GHz = 1e12 mHz
All Frequency units
From 1 GHz| Unit | Value |
|---|---|
| Millihertz mHz | 1e12 |
| Hertz Hz | 1,000,000,000 |
| Kilohertz kHz | 1,000,000 |
| Megahertz MHz | 1,000 |
| Gigahertz GHz | 1 |
| Terahertz THz | 0.001 |
| Revolution per minute rpm | 60,000,000,000 |
Recent conversions
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Quick reference
Gigahertz to Millihertz table
| Gigahertz (GHz) | Millihertz (mHz) |
|---|---|
| 0.01 | 10,000,000,000 |
| 0.1 | 100,000,000,000 |
| 1 | 1e12 |
| 2 | 2e12 |
| 5 | 5e12 |
| 10 | 1e13 |
| 25 | 2.5e13 |
| 50 | 5e13 |
| 100 | 1e14 |
| 1,000 | 1e15 |
From unit
About the gigahertz
One billion hertz.
Symbol: GHz
To unit
About the millihertz
One thousandth of a hertz.
Symbol: mHz
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Related conversions
Source
Conversion standard
Definitions are checked against BIPM SI Brochure: hertz. Calculations use full internal precision before display rounding.
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GHz to mHz FAQ
How do you convert gigahertz to millihertz?
Use the formula mHz = GHz x 1e12. 1 gigahertz (GHz) equals 1e12 millihertz (mHz).
Is the GHz to mHz conversion exact?
Both unit definitions use exact factors. Only the displayed decimal may be rounded.