HP to kW Converter
Type a value in horsepower to see it in kilowatts as you type, with the exact formula and a reference chart.
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- Metric horsepower
- 304.16 PS
How this was calculated
- 1 kilowatt = 1.34102209 horsepower
- 300 ÷ 1.34102209 = 223.70996 kW
| hp | kW |
|---|---|
| 1 hp | 0.7457 kW |
| 2 hp | 1.4914 kW |
| 3 hp | 2.2371 kW |
| 5 hp | 3.7285 kW |
| 7.5 hp | 5.59275 kW |
| 10 hp | 7.457 kW |
| 15 hp | 11.1855 kW |
| 20 hp | 14.914 kW |
| 25 hp | 18.6425 kW |
| 30 hp | 22.371 kW |
| 40 hp | 29.828 kW |
| 50 hp | 37.285 kW |
| 60 hp | 44.742 kW |
| 75 hp | 55.9275 kW |
| 100 hp | 74.57 kW |
| 150 hp | 111.855 kW |
| 200 hp | 149.14 kW |
| 250 hp | 186.425 kW |
| 300 hp | 223.71 kW |
| 400 hp | 298.28 kW |
| 500 hp | 372.85 kW |
| 600 hp | 447.42 kW |
| 700 hp | 521.99 kW |
| 1,000 hp | 745.7 kW |
| kW | hp |
|---|---|
| 1 kW | 1.34102 hp |
| 2 kW | 2.68204 hp |
| 3 kW | 4.02307 hp |
| 5 kW | 6.70511 hp |
| 7.5 kW | 10.0577 hp |
| 10 kW | 13.4102 hp |
| 15 kW | 20.1153 hp |
| 20 kW | 26.8204 hp |
| 25 kW | 33.5256 hp |
| 30 kW | 40.2307 hp |
| 37 kW | 49.6178 hp |
| 45 kW | 60.346 hp |
How to convert horsepower to kilowatts
1 horsepower = 0.7456998716 kilowatts. To convert horsepower to kilowatts, divide by 1.34102209 (or multiply by 0.7456998716). Mechanical horsepower is 550 foot-pounds per second, exactly 745.6998715822702 W (metric horsepower, PS, is 735.49875 W). A kilowatt is 1,000 watts.
Worked examples
- 100 horsepower = 74.57 kW (100 ÷ 1.3410221)
- 300 horsepower = 223.71 kW (300 ÷ 1.3410221)
- 700 horsepower = 521.99 kW (700 ÷ 1.3410221)
Where this conversion comes up
Horsepower are used for car, boat and lawn-mower engines; kilowatts for electric-motor and EV power, heaters and solar panels. One horsepower is 0.7457 kW, so 300 hp is 224 kW and a 1.5 hp pool pump draws about 1.1 kW. Generators and heaters are rated in kW; engines in hp.
Quick estimate
Multiply by 0.75 (0.6% high), or take three quarters.
Common mistakes
- Multiplying instead of dividing. A kilowatt is larger than a horsepower, so the number of kilowatts must come out smaller: 100 horsepower = 74.57 kW.
- Rounding too early. Keep the full factor until the last step; rounding 0.746 to 0.75 first puts large values noticeably off.
Going the other way? Use the kw to hp converter.
Frequently asked questions
How do you convert horsepower to kilowatts?
Multiply the horsepower by 0.7456998716 (or divide by 1.34102209). For example, 300 horsepower is 223.71 kilowatts.
How many kilowatts are in one horsepower?
One horsepower is 0.7456998716 kilowatts. Mechanical horsepower is 550 foot-pounds per second, exactly 745.6998715822702 W (metric horsepower, PS, is 735.49875 W).
What is 700 horsepower in kilowatts?
700 horsepower is 521.99 kilowatts.
Is there a quick way to estimate horsepower to kilowatts?
Multiply by 0.75 (0.6% high), or take three quarters.