Kilohertz (kHz)
A kilohertz is 1000 Hz. Human hearing reaches about 20 kHz, audio is sampled at 44.1 or 48 kHz, and AM radio broadcasts at 531–1602 kHz.
Symbol: kHz
Quantity: frequency and rotational speed
SI relation: 1 kHz = 1000 Hz (exact)
Derivation: 1 kHz = 10³ Hz.
Exact: yes, by definition
Typical uses
- Audio sample rates
- AM radio
- Switching power supplies and PWM
Convert kilohertz to other units
| Conversion | 1 kHz equals | Reverse |
|---|---|---|
| kilohertz to hertz | 1000 Hz | hertz to kilohertz |
| kilohertz to megahertz | 0.001 MHz | megahertz to kilohertz |
| kilohertz to gigahertz | 0.000001 GHz | gigahertz to kilohertz |
| kilohertz to revolution per minute | 60000 rpm | revolution per minute to kilohertz |
| kilohertz to radian per second | 6283.185307 rad/s | radian per second to kilohertz |
| kilohertz to revolution per second | 1000 rps | revolution per second to kilohertz |
| kilohertz to degree per second | 360000 °/s | degree per second to kilohertz |
| kilohertz to beat per minute | 60000 bpm | beat per minute to kilohertz |
| kilohertz to terahertz | 1 × 10⁻⁹ THz | terahertz to kilohertz |
Open the Frequency & RPM Converter to convert any value between all units.
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). Kilohertz (kHz). Retrieved October 25, 2026, from https://scientificconverters.com/units/kilohertz/
IEEE
Scientific Converters, "Kilohertz (kHz)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/kilohertz/