How to convert horsepower to kilowatts
To convert horsepower to kilowatts, multiply by 0.745699871582. Power conversions compare engines, motors, appliances, solar panels and air conditioners.
Horsepower to Kilowatt conversion table
| Horsepower (hp) | Kilowatt (kW) |
|---|---|
| 0.1 hp | 0.0745699871582 kW |
| 0.5 hp | 0.372849935791 kW |
| 1 hp | 0.745699871582 kW |
| 2 hp | 1.49139974316 kW |
| 3 hp | 2.23709961475 kW |
| 4 hp | 2.98279948633 kW |
| 5 hp | 3.72849935791 kW |
| 10 hp | 7.45699871582 kW |
| 20 hp | 14.9139974316 kW |
| 25 hp | 18.6424967896 kW |
| 50 hp | 37.2849935791 kW |
| 100 hp | 74.5699871582 kW |
| 500 hp | 372.849935791 kW |
| 1,000 hp | 745.699871582 kW |
About the units
Horsepower (hp)
Mechanical horsepower is 550 foot-pounds per second, about 745.7 watts.
Kilowatt (kW)
A kilowatt equals 1,000 watts and rates engines, heaters and EV chargers.
How to use this converter
- Type the number of horsepower (hp) in the input box.
- The result in kilowatts appears instantly — no button needed.
- See the same value in every other power unit just below.
- Use “Swap units” to convert kilowatts back to horsepower.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many kilowatts are in one horsepower?
One horsepower equals 0.745699871582 kilowatts. 0.745699871582 is the exact factor used by this converter.
How do I convert horsepower to kilowatts?
Multiply the value in horsepower by 0.745699871582. To go the other way, multiply kilowatts by 1.3410220896.
What is 10 hp in kW?
10 hp = 7.45699871582 kW. Also, 5 hp = 3.72849935791 kW and 100 hp = 74.5699871582 kW.
What is the difference between a horsepower and a kilowatt?
Mechanical horsepower is 550 foot-pounds per second, about 745.7 watts. A kilowatt equals 1,000 watts and rates engines, heaters and EV chargers.
Is this tool free and private?
Yes — the Horsepower to Kilowatt is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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