How to Convert Gigahertz to Hertz (GHz to Hz)
Frequency conversions apply to radio stations, Wi-Fi bands and processor speeds. This guide shows how to convert gigahertz into hertz by hand, with examples and a quick-reference table.
The conversion
To convert gigahertz to hertz, multiply the value by 1.000000e+09. To go the other way, divide by the same number (or multiply by 1.000000e-09). For a quick estimate, multiply by about 1,000,000,000.
Hertz = gigahertz × 1.000000e+09
Worked examples
- 3 GHz = 3,000,000,000 Hz
- 12.5 GHz = 12,500,000,000 Hz
- 75 GHz = 75,000,000,000 Hz
Gigahertz to Hertz table
| Gigahertz | Hertz |
|---|---|
| 1 GHz | 1,000,000,000 Hz |
| 2 GHz | 2,000,000,000 Hz |
| 5 GHz | 5,000,000,000 Hz |
| 10 GHz | 10,000,000,000 Hz |
| 20 GHz | 20,000,000,000 Hz |
| 25 GHz | 25,000,000,000 Hz |
| 50 GHz | 50,000,000,000 Hz |
| 100 GHz | 100,000,000,000 Hz |
| 250 GHz | 250,000,000,000 Hz |
| 500 GHz | 500,000,000,000 Hz |
| 1,000 GHz | 1.000000e+12 Hz |
Common questions
Is GHz to Hz exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Hertz to Gigahertz converter.
Mistakes to avoid
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For any value, use the Gigahertz to Hertz Converter or browse all frequency converters.
Run your own numbers: Gigahertz to Hertz Converter