Gigahertz to Hertz
Type a value in either box to convert between gigahertz and hertz. The factor is 1e+09.
| Gigahertz | Hertz |
|---|---|
| 1 GHz | 1000000000 Hz |
| 2 GHz | 2000000000 Hz |
| 3 GHz | 3000000000 Hz |
| 5 GHz | 5000000000 Hz |
| 10 GHz | 10000000000 Hz |
| 25 GHz | 25000000000 Hz |
| 50 GHz | 50000000000 Hz |
| 100 GHz | 100000000000 Hz |
How to use
- Enter a value in the Gigahertz field.
- The Hertz figure appears immediately — no button to press.
- Typing in the Hertz field converts back to Gigahertz the same way.
- Use the reference table for the values that come up most often.
Gigahertz to Hertz formula
Converting gigahertz to hertz is a single multiplication by 1e+09.
Hz = GHz × 1e+09
Why this factor: the gigahertz and the hertz are both defined against the hertz, so dividing one definition by the other gives 1e+09 directly. Both definitions are set out in full below.
To go the other way, divide by 1e+09 — or use the Hertz to Gigahertz converter, which is the same calculation reversed.
Worked example
Given 60 GHz, multiplying by 1e+09 yields 60000000000 Hz.
60 GHz × 1e+09 = 60000000000 Hz
The converter above does this for any value you type, in either direction.
What is a gigahertz?
A gigahertz is one billion cycles per second — the scale of modern processors and wireless.
Definition: Exactly 1×10⁹ hertz.
Where it is used: CPU clock speeds, Wi-Fi bands (2.4 and 5 GHz), mobile networks, and radar.
What is a hertz?
The hertz is the SI unit of frequency — one cycle per second.
Definition: Defined as one reciprocal second (s⁻¹). Named after Heinrich Hertz.
Where it is used: Mains electricity (50 or 60 Hz), audio frequencies, and display refresh rates.
Gigahertz vs Hertz
The gigahertz is a metric unit while the hertz is an SI unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many hertz are in a gigahertz?
One gigahertz equals 1e+09 hertz.
What is the formula to convert gigahertz to hertz?
Multiply the number of gigahertz by 1e+09. To reverse it, divide by 1e+09 instead.
How do I convert hertz back to gigahertz?
Divide by 1e+09, which is the same as multiplying by 1e-09.
How many hertz are in 10 gigahertz?
10 GHz works out to 10000000000 Hz.
How is the gigahertz defined?
Exactly 1×10⁹ hertz.