Convert horsepower to watts
1 hp = 745.7 W. Change the amount below, or read the formula and the reference table further down.
1 horsepower equals
watts
1 hp = 745.7 W
The formula
Horsepower and watts both measure power from the same zero, so a single multiplier does the job.
W = hp × 745.7
Going the other way? Convert watts to horsepower.
Horsepower to watts table
Common values, rounded for reading.
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 | 745.7 |
| 2 | 1,491.4 |
| 3 | 2,237.1 |
| 4 | 2,982.8 |
| 5 | 3,728.5 |
| 6 | 4,474.2 |
| 7 | 5,219.9 |
| 8 | 5,965.6 |
| 9 | 6,711.3 |
| 10 | 7,457 |
| 15 | 11,185.5 |
| 20 | 14,914 |
| 25 | 18,642.5 |
| 30 | 22,371 |
| 40 | 29,827.99 |
| 50 | 37,284.99 |
| 75 | 55,927.49 |
| 100 | 74,569.99 |
| 250 | 186,424.97 |
| 500 | 372,849.94 |
| 1,000 | 745,699.87 |
Questions people ask
- How many watts are in a horsepower?
- One horsepower equals 745.7 watts.
- How do I convert horsepower to watts by hand?
- Multiply the number of horsepower by 745.7. For a rough check, 745.7 is close enough for most everyday use.
- What is 1 horsepower in watts?
- 1 horsepower is 745.7 watts.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.