Convert Gigahertz to Kilohertz
Gigahertz to kilohertz spans two metric steps at once — from the billions unit down to the thousands unit — so it's the conversion you need when a fast signal like a 3.2 GHz CPU clock has to be lined up against something quoted in kilohertz. One gigahertz is exactly 1,000,000 kilohertz, so the number gets much larger going this way.
Gigahertz to Kilohertz conversion table
| Gigahertz (GHz) | Kilohertz (kHz) |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 20 | 20,000,000 |
| 50 | 50,000,000 |
| 100 | 100,000,000 |
| 500 | 500,000,000 |
| 1,000 | 1,000,000,000 |
The formula
To convert gigahertz to kilohertz, multiply the number of gigahertz by 1,000,000:
kilohertz = gigahertz × 1,000,000
A worked example
Say you have a 3.2 GHz CPU clock and want it in kilohertz:
3.2 × 1,000,000 = 3,200,000 kHz
So 3.2 gigahertz is exactly 3,200,000 kilohertz.
Why the number is exact
"Giga" means exactly one billion and "kilo" means exactly one thousand — both are defined metric prefixes on the same base unit, the hertz. A billion divided by a thousand is exactly a million, so one gigahertz is exactly 1,000,000 kilohertz. The two decade steps line up cleanly as exact powers of a thousand, with no rounding.
When you'll use it
Lining up a fast signal like a CPU clock or a radio band against a measurement quoted in kilohertz, and stepping across the metric frequency units without losing precision.
Frequently asked questions
How many kilohertz are in a gigahertz?
Exactly 1,000,000 kilohertz — one million. A gigahertz is a billion hertz and a kilohertz is a thousand hertz, so a gigahertz is a million kilohertz.
What is 3.2 GHz in kilohertz?
Exactly 3,200,000 kHz. A 3.2 GHz CPU clock is 3.2 million kilohertz — multiply 3.2 by 1,000,000.
Is the gigahertz to kilohertz conversion exact?
Yes. Both 'giga' and 'kilo' are defined metric prefixes, so one gigahertz is exactly 1,000,000 kilohertz — an exact step, nothing rounded.