Horsepower to Watts Converter
Convert horsepower to watts instantly. 1 hp = 745.7 W. Free two-way converter with the formula and a quick reference table.
How to convert horsepower to watts
watts = horsepower × 745.7
One horsepower equals 745.7 watts, so to convert horsepower to watts you multiply by 745.7. Going the other way, one watt is 0.001341 horsepower. Both units measure power, so the conversion is an exact ratio that never changes.
10 horsepower = 7,457 watts. Multiply your horsepower figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? watts to horsepower
horsepower to watts table
| horsepower (hp) | watts (W) |
|---|---|
| 1 | 745.7 |
| 2 | 1,491.4 |
| 3 | 2,237.1 |
| 5 | 3,728.5 |
| 10 | 7,457 |
| 20 | 14,914 |
| 25 | 18,642.5 |
| 50 | 37,284.99 |
| 100 | 74,569.99 |
| 250 | 186,424.97 |
| 500 | 372,849.94 |
| 1,000 | 745,699.87 |
Frequently asked questions
How many watts are in a horsepower?
One horsepower equals 745.7 watts. So to convert, multiply the number of horsepower by 745.7.
How do I convert horsepower to watts?
Multiply by 745.7, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.