Mechanical horsepower to Watts
Convert mechanical horsepower to watts (hp to W). 1 hp = 745.699871582 W. Use the calculator, formula and conversion table.
How to convert mechanical horsepower to watts
Multiply the amount in mechanical horsepower by 745.699871582 to get watts. The displayed factor and results are rounded to 12 significant digits.
W = hp × 745.699871582Worked example
1 hp = 745.699871582 W. Change the amount in the calculator above to use your own value.
Units and assumptions
A kilowatt is 1,000 watts. Mechanical horsepower and metric horsepower are separate options. BTU per hour uses the International Table BTU.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Mechanical horsepower to Watts table
| Mechanical horsepower (hp) | Watts (W) |
|---|---|
| 0 | 0 |
| 1 | 745.699871582 |
| 5 | 3,728.49935791 |
| 10 | 7,456.99871582 |
| 25 | 18,642.4967896 |
| 100 | 74,569.9871582 |
| 1,000 | 745,699.871582 |
About this conversion
What is the formula for mechanical horsepower to watts?
W = hp × 745.699871582. Multiply the amount in mechanical horsepower by 745.699871582 to get watts. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to mechanical horsepower?
Use the watts to mechanical horsepower calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the power converter to browse all supported pairs.