Convert Gigahertz to Kilohertz (GHz to kHz)
1 gigahertz (GHz) = 1000000 kilohertz (kHz). 1 kHz = 0.000001 GHz. Example: 15 GHz = 15 × 1000000 = 15000000 kHz.
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1 GHz = 1000000 kHz
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigahertz to kilohertz converter to paste a column from Excel.
How to Convert Gigahertz to Kilohertz
- 1 GHz = 1000000 kHz
- 1 kHz = 0.000001 GHz
- Example: convert 15 GHz to kHz: 15 GHz = 15 × 1000000 kHz = 15000000 kHz
Formula
kHz = GHz × 1000000
Derivation from SI units:
- 1 GHz = 10⁹ Hz.
- 1 kHz = 10³ Hz.
- 1 GHz = 1000000000 Hz ÷ 1000 Hz per kHz = 1000000 kHz
Both units are defined exactly, so the factor is exact. Gigahertz definition: gigahertz; Kilohertz definition: kilohertz.
Worked examples
- A reading of 3.5 GHz converts to 3500000 kHz.
3.5 GHz × 1000000 = 3500000 kHz - A value of 5.8 GHz is 5800000 kHz.
5.8 GHz × 1000000 = 5800000 kHz
Gigahertz to Kilohertz conversion table
| Gigahertz (GHz) | Kilohertz (kHz) |
|---|---|
| 1 GHz | 1000000 kHz |
| 2.4 GHz | 2400000 kHz |
| 3 GHz | 3000000 kHz |
| 3.5 GHz | 3500000 kHz |
| 4 GHz | 4000000 kHz |
| 5 GHz | 5000000 kHz |
| 5.8 GHz | 5800000 kHz |
| 6 GHz | 6000000 kHz |
| 28 GHz | 28000000 kHz |
| 60 GHz | 60000000 kHz |
Where it's used
Gigahertz are used for CPU and GPU clock speeds, while kilohertz appear in audio sample rates. Both measure frequency and rotational speed, so the conversion is a fixed factor.
Gigahertz to other frequency units
| Conversion | 1 GHz equals |
|---|---|
| gigahertz to kilohertz | 1000000 kHz |
| gigahertz to hertz | 1000000000 Hz |
| gigahertz to megahertz | 1000 MHz |
| gigahertz to revolution per minute | 60000000000 rpm |
| gigahertz to radian per second | 6283185307 rad/s |
| gigahertz to revolution per second | 1000000000 rps |
| gigahertz to degree per second | 360000000000 °/s |
| gigahertz to beat per minute | 60000000000 bpm |
Show 1 more units
| gigahertz to terahertz | 0.001 THz |
|---|
Frequently asked questions
How many kilohertz are in 1 gigahertz?
1 GHz = 1000000 kHz.
How do I convert gigahertz to kilohertz?
Multiply the value in GHz by 1000000. For example, 15 GHz × 1000000 = 15000000 kHz.
Is the GHz to kHz conversion exact?
Yes. Both units are defined exactly, and 1 GHz is exactly 1000000 kHz.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gigahertz to Kilohertz (GHz to kHz). Retrieved October 25, 2026, from https://scientificconverters.com/frequency/gigahertz-to-kilohertz/
IEEE
Scientific Converters, "Convert Gigahertz to Kilohertz (GHz to kHz)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/frequency/gigahertz-to-kilohertz/