HP to kW Converter
Convert horsepower to kilowatts as you type, with the exact formula, a chart from 1 to 2,000 hp and real US car ratings shown in both units.
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1 hp = 745.7 W exactly by definition. Works for hp and bhp alike.
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How to convert hp to kW
James Watt defined one horsepower as 33,000 foot-pounds of work per minute. In SI units that is 745.7 watts, so to turn horsepower into kilowatts you multiply by 0.7457.
Exact formula
kW = hp × 0.74570
Mental shortcut
kW ≈ hp × 3 ÷ 4
- 1 hp
- 0.74570 kW, or 745.7 W
- 1 bhp
- 0.74570 kW, the same unit measured at the crank
- 1 PS
- 0.73550 kW (metric horsepower)
- 1 kW
- 1.34102 hp
Worked example: a 300 hp engine × 0.7457 = 223.7 kW. With the shortcut, 300 × 3 ÷ 4 = 225 kW, about half a percent high.
hp to kW chart (1 to 2,000 hp)
Small-engine sizes at the top, then the ratings you meet on car spec sheets. The PS column is what a European brochure would print for the same power.
| hp | kW | PS | Typical use |
|---|---|---|---|
| 1 hp | 0.7 kW | 1.0 PS | Power tools and e-bike motors |
| 2 hp | 1.5 kW | 2.0 PS | Mowers, generators and small motors |
| 3 hp | 2.2 kW | 3.0 PS | Small engines, e.g. a 79cc engine |
| 5 hp | 3.7 kW | 5.1 PS | Mowers, generators and small motors |
| 5.5 hp | 4.1 kW | 5.6 PS | Small engines, e.g. a 196cc engine |
| 6.5 hp | 4.8 kW | 6.6 PS | Small engines, e.g. a 212cc engine |
| 8 hp | 6.0 kW | 8.1 PS | Mowers, generators and small motors |
| 10 hp | 7.5 kW | 10.1 PS | Mowers, generators and small motors |
| 13 hp | 9.7 kW | 13.2 PS | Small engines, e.g. a 420cc engine |
| 15 hp | 11.2 kW | 15.2 PS | Scooters and learner motorcycles |
| 20 hp | 14.9 kW | 20.3 PS | Scooters and learner motorcycles |
| 25 hp | 18.6 kW | 25.3 PS | Scooters and learner motorcycles |
| 30 hp | 22.4 kW | 30.4 PS | Scooters and learner motorcycles |
| 40 hp | 29.8 kW | 40.6 PS | Scooters and learner motorcycles |
| 50 hp | 37.3 kW | 50.7 PS | City cars and mid-size motorcycles |
| 75 hp | 55.9 kW | 76.0 PS | City cars and mid-size motorcycles |
| 100 hp | 74.6 kW | 101.4 PS | City cars and mid-size motorcycles |
| 125 hp | 93.2 kW | 126.7 PS | Compact and family cars |
| 150 hp | 111.9 kW | 152.1 PS | Compact and family cars |
| 175 hp | 130.5 kW | 177.4 PS | Family sedans, SUVs and single-motor EVs |
| 200 hp | 149.1 kW | 202.8 PS | Family sedans, SUVs and single-motor EVs |
| 225 hp | 167.8 kW | 228.1 PS | Family sedans, SUVs and single-motor EVs |
| 250 hp | 186.4 kW | 253.5 PS | Family sedans, SUVs and single-motor EVs |
| 300 hp | 223.7 kW | 304.2 PS | Pickups, sports cars and dual-motor EVs |
| 350 hp | 261.0 kW | 354.9 PS | Pickups, sports cars and dual-motor EVs |
| 400 hp | 298.3 kW | 405.5 PS | Pickups, sports cars and dual-motor EVs |
| 450 hp | 335.6 kW | 456.2 PS | Performance cars and V8 muscle cars |
| 500 hp | 372.8 kW | 506.9 PS | Performance cars and V8 muscle cars |
| 600 hp | 447.4 kW | 608.3 PS | Performance cars and V8 muscle cars |
| 700 hp | 522.0 kW | 709.7 PS | Supercars |
| 800 hp | 596.6 kW | 811.1 PS | Supercars |
| 1,000 hp | 745.7 kW | 1,013.9 PS | Supercars |
| 1,500 hp | 1,118.5 kW | 1,520.8 PS | Hypercars |
| 2,000 hp | 1,491.4 kW | 2,027.7 PS | Hypercars |
Small engines are usually sold by displacement rather than power. To estimate what a given cc is worth, use the cc to hp calculator.
Real cars in hp and kW
US manufacturers quote horsepower. Here are some well-known current models, their published rating and the same power in kW and PS, as a European brochure would show it.
| Car | Rated | In kW | In PS |
|---|---|---|---|
| Toyota Corolla 2.0 (2026)Cars.com specs | 169 hp | 126 kW | 171 PS |
| Honda CR-V Hybrid (2026)Honda | 204 hp | 152 kW | 207 PS |
| Chevrolet Equinox EV FWD (2026)Edmunds | 213 hp | 159 kW | 216 PS |
| Toyota Camry Hybrid FWD (2025-26)Toyota rating, via Wikipedia | 225 hp | 168 kW | 228 PS |
| Ford F-150 2.7L EcoBoost (2026)Ford | 325 hp | 242 kW | 330 PS |
| Ford Mustang GT (2026)Ford | 480 hp | 358 kW | 487 PS |
| Tesla Model 3 Performance (2024)Road & Track | 510 hp | 380 kW | 517 PS |
Ratings checked against the linked sources on 29 September 2026. Hybrid and EV figures are total system output.
Converting bhp, PS and whp to kW
bhp to kW
Brake horsepower is measured at the crankshaft with the engine's ancillaries fitted, but the unit is the same. Multiply by 0.7457: 200 bhp is 149.1 kW.
PS to kW
Metric horsepower (PS, CV or ch) is 735.5 W. Multiply by 0.7355: 200 PS is 147.1 kW. Mixing up PS and hp is the most common conversion error; the PS to hp converter does both.
whp to kW
Wheel horsepower is lower than the crank figure. Convert it to kW directly to compare dyno sheets, or first estimate crank power with the whp to hp calculator.
Electrical hp
Some motor nameplates use an electrical horsepower of exactly 746 W. The difference from 745.7 W is too small to matter outside a lab.
For where each horsepower figure is measured, and how much the numbers differ in practice, read WHP vs BHP vs HP.
Sources and method
One mechanical horsepower is 745.69987 W, so 1 hp = 0.745700 kW; metric horsepower (PS) is 735.49875 W. Car ratings come from the manufacturers linked in the table.
Updated September 2026. Built and checked by the 0-60calc Team. Found a mistake? Tell us and we will check it against the source.
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Questions people ask
How do I convert hp to kW?
Multiply the horsepower by 0.7457. For example, 300 hp × 0.7457 = 223.7 kW. For a quick estimate, multiply by 3 and divide by 4.
How many kW is 100 hp?
100 hp is 74.6 kW. 200 hp is 149.1 kW and 500 hp is 372.8 kW.
How do I convert bhp to kW?
The same way as hp: multiply by 0.7457. Brake horsepower is measured at the crankshaft but uses the same unit, so 150 bhp is 111.9 kW.
How do I convert PS to kW?
Multiply by 0.7355. PS is metric horsepower, which is 1.4% smaller than a mechanical horsepower, so 150 PS is 110.3 kW.
Is 1 hp equal to 0.75 kW?
Close. One mechanical horsepower is 0.7457 kW, and the rounded 0.75 is fine for quick estimates. The exact factor matters when a licence or tax rule sets a kW limit.
Why do European cars list kW and PS?
The kilowatt is the official unit for vehicle power in the EU and many other countries, so it goes on the paperwork, while PS is the traditional figure buyers know. US brochures use horsepower instead.