Horsepower to Watts Converter
How to convert horsepower to watts
watts = horsepower × 745.699872
To convert horsepower to watts, multiply the number of horsepower by 745.699872.
1 hp = 745.699872 W
Examples
- 1 hp × 745.699872 = 745.699872 W
- 300 hp × 745.699872 = 223,709.961 W
Good to know
One mechanical horsepower is about 745.7 watts. Electric motors are sometimes rated using the rounded electrical horsepower of exactly 746 watts.
This is mechanical (imperial) horsepower, 550 ft·lbf/s or about 745.7 W. Metric horsepower (PS, CV) is about 1.4% smaller at 735.49875 W, and electric motors are sometimes rated in electrical horsepower of exactly 746 W.
Horsepower to watts conversion table
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 hp | 745.699872 W |
| 2 hp | 1,491.39974 W |
| 5 hp | 3,728.49936 W |
| 10 hp | 7,456.99872 W |
| 20 hp | 14,913.9974 W |
| 50 hp | 37,284.9936 W |
| 75 hp | 55,927.4904 W |
| 100 hp | 74,569.9872 W |
| 150 hp | 111,854.981 W |
| 200 hp | 149,139.974 W |
| 250 hp | 186,424.968 W |
| 300 hp | 223,709.961 W |
| 500 hp | 372,849.936 W |
| 750 hp | 559,274.904 W |
| 1,000 hp | 745,699.872 W |
| 2,000 hp | 1,491,399.74 W |
| 5,000 hp | 3,728,499.36 W |
Unit definitions
- Horsepower (hp)
- Mechanical horsepower is defined as 550 foot-pounds force per second, exactly 745.69987158227022 watts. It is used for engine and motor ratings in the United States and United Kingdom.
- Watt (W)
- The watt is the SI unit of power, equal to one joule per second. It is used to rate electrical appliances, lighting and electronics.