Convert horsepower to watts
Horsepower (hp) to watt (W). One horsepower equals 745.7 watts.
Formula
Horsepower to watt conversion table
| Horsepower | Watts | Watts | Horsepower |
|---|---|---|---|
| 1 hp | 745.7 W | 1 W | 0.001341 hp |
| 2 hp | 1491.4 W | 2 W | 0.002682 hp |
| 3 hp | 2237.1 W | 3 W | 0.004023 hp |
| 5 hp | 3728.5 W | 5 W | 0.006705 hp |
| 10 hp | 7457 W | 10 W | 0.01341 hp |
| 20 hp | 14914 W | 20 W | 0.02682 hp |
| 50 hp | 37284.99 W | 50 W | 0.067051 hp |
| 100 hp | 74569.99 W | 100 W | 0.134102 hp |
| 500 hp | 372849.94 W | 500 W | 0.670511 hp |
| 1000 hp | 745699.87 W | 1000 W | 1.341 hp |
To convert horsepower to watts, multiply the number of horsepower by 745.7. One horsepower equals 745.7 watts, and one watt equals 0.001341 horsepower, so the relationship is fixed and exact. As a worked example, 10 hp comes to 7457 W. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a power conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common horsepower values already worked out in watts, plus the reverse watt to horsepower direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many watts are in a horsepower?
One horsepower equals 745.7 watts. The ratio is constant, so you can multiply any number of horsepower by 745.7 to get watts.
What is the formula to convert horsepower to watts?
Use watts = horsepower × 745.7. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert watts back to horsepower?
Go the other way by using one watt equals 0.001341 horsepower. You can also press the swap button in the converter above to flip the direction in one click.
Is this horsepower to watt converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.