Horsepower to Watts Converter
Convert horsepower (hp) to watts (W) instantly. Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
Result
- Watts
- 745.6999 W
How to use the horsepower to watts converter
- Enter the horsepower (hp).
- The results update as you type, or press Calculate.
- Read the watts first, then the supporting figures below it.
Formula
Watts = horsepower × 745.699872
Worked example
For example, with these inputs:
- Horsepower (hp): 1
the calculator returns:
- Watts: 745.6999 W
Horsepower to Watts table
| Horsepower | Watts |
|---|---|
| 1 hp | 745.6999 W |
| 2 hp | 1,491.4 W |
| 5 hp | 3,728.5 W |
| 10 hp | 7,457 W |
| 20 hp | 14,914 W |
| 25 hp | 18,642.5 W |
| 50 hp | 37,284.99 W |
| 100 hp | 74,569.99 W |
| 250 hp | 186,424.97 W |
| 500 hp | 372,849.94 W |
| 1,000 hp | 745,699.87 W |
About this conversion
Power conversions help compare car engines in hp and kW, and air-con units rated in BTU/h against their electrical draw in watts.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
Frequently asked questions
How many watts are in one horsepower?
1 hp = 745.6999 W.
How do I convert hp to W?
Watts = horsepower × 745.699872.