Horsepower Converter
kW, hp, PS and torque to power
Convert Power
Result
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Power from Torque & RPM
Power at that rpm-
Power (kW) = torque (N·m) × rpm × 2π ÷ 60,000. In lb·ft and hp, torque and horsepower cross at 5,252 rpm.
kW to Horsepower Chart
| kW | PS | hp |
|---|---|---|
| 50 | 68 | 67 |
| 70 | 95 | 94 |
| 100 | 136 | 134 |
| 110 | 150 | 148 |
| 150 | 204 | 201 |
| 160 | 218 | 215 |
| 200 | 272 | 268 |
| 250 | 340 | 335 |
| 300 | 408 | 402 |
| 350 | 476 | 469 |
| 400 | 544 | 536 |
1 kW = 1.36 PS = 1.34 hp, and 1 PS = 0.986 hp — so the same car is quoted about 1.4% higher in PS than in hp.
Horsepower Units Compared
| Unit | Watts | Where it's used |
|---|---|---|
| PS | 735.5 W | Cars in Europe, Japan, Korea (also CV, ch) |
| hp | 745.7 W | US/UK cars and engines (bhp) |
| hp(E) | 746 W | Electric motors |
| kW | 1,000 W | EV motors, SI standard |
Formulas & Sources
- 1 PS = 75 kgf·m/s = 735.49875 W · 1 hp = 550 ft·lbf/s = 745.69987 W · electrical hp = 746 W
- 1 kgf·m = 9.80665 N·m · 1 lb·ft = 1.35582 N·m
Last reviewed: 2026-10-19
FAQ
How many horsepower is 150 kW?
150 kW = 201 hp = 204 PS. EV motors are rated in kW; US specs use hp.
What is the difference between hp and PS?
hp (mechanical) is 745.7 W; PS (metric horsepower) is 735.5 W. 1 PS = 0.986 hp, so PS figures read about 1.4% higher.
How do I convert hp to kW?
Multiply hp by 0.7457. 300 hp is about 224 kW.
How are torque and horsepower related?
hp = torque (lb·ft) × rpm ÷ 5,252. That's why torque and horsepower curves cross at 5,252 rpm.
Why are electric cars rated in kW?
Electric motors are specified in SI units. Many spec sheets list kW alongside hp or PS.