Horsepower to Watts Converter
Convert horsepower (mechanical, 550 ft·lbf/s) (hp) to watts (W), with the formula, a conversion table and exact factors.
Change the values and press Calculate to work out your own figures.
Enter a power, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.
Show the working
- 1 hp = 745.699871582 W
- 1 × 745.699871582 = 745.699871582 W
How to convert horsepower to watts
1 hp = 745.699871582 W, so multiply by 745.699871582 to go from horsepower (mechanical, 550 ft·lbf/s) to watts. Going the other way, 1 W = 0.0013410220896 hp.
W = hp × 745.699871582 hp = W × 0.0013410220896
Worked example:
1 hp = 745.699871582 W 5 × 745.699871582 = 3728.49935791 W
Horsepower to watts table
| Horsepower | Watts |
|---|---|
| 1 hp | 745.699871582 W |
| 2 hp | 1,491.39974316 W |
| 3 hp | 2,237.09961475 W |
| 4 hp | 2,982.79948633 W |
| 5 hp | 3,728.49935791 W |
| 6 hp | 4,474.19922949 W |
| 7 hp | 5,219.89910108 W |
| 8 hp | 5,965.59897266 W |
| 9 hp | 6,711.29884424 W |
| 10 hp | 7,456.99871582 W |
| 15 hp | 11,185.4980737 W |
| 20 hp | 14,913.9974316 W |
| 25 hp | 18,642.4967896 W |
| 30 hp | 22,370.9961475 W |
| 40 hp | 29,827.9948633 W |
| 50 hp | 37,284.9935791 W |
| 75 hp | 55,927.4903687 W |
| 100 hp | 74,569.9871582 W |
| 250 hp | 186,424.967896 W |
| 500 hp | 372,849.935791 W |
| 1000 hp | 745,699.871582 W |
About the units
- Horsepower (hp)
- Horsepower (mechanical, 550 ft·lbf/s), a US customary unit. Exact from 550 × 0.3048 m × 0.45359237 kg × 9.80665 m/s² per second. Definition: NIST SP 811 Appendix B.9 (horsepower, 550 ft·lbf/s).
- Watts (W)
- Watts, a metric unit. Definition: BIPM SI Brochure.