Gigahertz to Kilohertz
Convert gigahertz to kilohertz instantly — one gigahertz is 1e+06 kilohertz.
| Gigahertz | Kilohertz |
|---|---|
| 1 GHz | 1000000 kHz |
| 2 GHz | 2000000 kHz |
| 3 GHz | 3000000 kHz |
| 5 GHz | 5000000 kHz |
| 10 GHz | 10000000 kHz |
| 25 GHz | 25000000 kHz |
| 50 GHz | 50000000 kHz |
| 100 GHz | 100000000 kHz |
How to use
- Enter a value in the Gigahertz field.
- The Kilohertz figure appears immediately — no button to press.
- Typing in the Kilohertz field converts back to Gigahertz the same way.
- Use the reference table for the values that come up most often.
Gigahertz to Kilohertz formula
Converting gigahertz to kilohertz is a single multiplication by 1000000.
kHz = GHz × 1000000
Why this factor: the gigahertz and the kilohertz are both defined against the hertz, so dividing one definition by the other gives 1000000 directly. Both definitions are set out in full below.
To go the other way, divide by 1000000 — or use the Kilohertz to Gigahertz converter, which is the same calculation reversed.
Worked example
Take 1000 GHz and multiply by the factor 1000000: the result is 1000000000 kHz.
1000 GHz × 1000000 = 1000000000 kHz
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 kilohertz?
A kilohertz is 1,000 cycles per second.
Definition: Exactly 1,000 hertz.
Where it is used: AM radio frequencies, audio sample rates (44.1 kHz for CD audio), and ultrasonic ranges.
Gigahertz vs Kilohertz
The gigahertz and the kilohertz belong to the same family of units, so converting between them is usually a matter of shifting a decimal point or applying a small whole-number factor.
Frequently asked questions
How many kilohertz are in a gigahertz?
One gigahertz equals 1000000 kilohertz.
What is the formula to convert gigahertz to kilohertz?
Multiply the number of gigahertz by 1000000. To reverse it, divide by 1000000 instead.
How do I convert kilohertz back to gigahertz?
Divide by 1000000, which is the same as multiplying by 1e-06.
How many kilohertz are in 10 gigahertz?
10 GHz works out to 10000000 kHz.
How is the gigahertz defined?
Exactly 1×10⁹ hertz.