kW to hp converter
Convert kilowatts to horsepower, or horsepower to kilowatts, for cars, engines and motors.
Factors from the NIST Guide to the SI, the US standards body's reference.
Show the workings
| Step | Sum | Answer |
|---|---|---|
| Horsepower | 100 kW × 1,000 ÷ 745.6999 watts | 134.102 hp |
Where the figures come from
- Watts in one horsepower (550 ft·lbf/s), the horsepower used for UK cars: 745.6999 watts. Source: NIST Guide to the SI, Appendix B.8: factors for units listed alphabetically. Checked 13 November 2026.
kW to hp table
| Kilowatts | Horsepower (hp) | Metric hp (PS) |
|---|---|---|
| 50 kW | 67.1 | 68 |
| 75 kW | 100.6 | 102 |
| 100 kW | 134.1 | 136 |
| 150 kW | 201.2 | 203.9 |
| 200 kW | 268.2 | 271.9 |
| 300 kW | 402.3 | 407.9 |
Which horsepower?
There are three in common use. Horsepower (hp, often written bhp for engines) is 745.6999 watts. Metric horsepower (PS in Germany, cv in France and Italy) is 735.4988 watts, a little less. Electric motors are rated in electric horsepower of exactly 746 watts. Electric cars are usually rated in kW, which is why this conversion comes up.
To convert kW to hp, multiply by 1,000 and divide by 745.6999. To convert hp to kW, multiply by 745.6999 and divide by 1,000.