Convert Horsepower to Watts
1 horsepower = 745.699872 watts. Type any value below to convert in either direction — the calculation happens in your browser.
Horsepower to Watts formula
Multiply the number of horsepower by 745.699872 to get watts.
watts = horsepower × 745.699872To go the other way: divide the number of watts by 745.699872, or multiply by 0.001341022.
horsepower = watts ÷ 745.699872Horsepower to Watts conversion table
| Horsepower | Watts |
|---|---|
| 1 hp | 745.699872 W |
| 2 hp | 1,491.4 W |
| 3 hp | 2,237.1 W |
| 4 hp | 2,982.799 W |
| 5 hp | 3,728.499 W |
| 6 hp | 4,474.199 W |
| 7 hp | 5,219.899 W |
| 8 hp | 5,965.599 W |
| 9 hp | 6,711.299 W |
| 10 hp | 7,456.999 W |
| 15 hp | 11,185.5 W |
| 20 hp | 14,914 W |
| 25 hp | 18,642.5 W |
| 30 hp | 22,371 W |
| 40 hp | 29,827.99 W |
| 50 hp | 37,284.99 W |
| 75 hp | 55,927.49 W |
| 100 hp | 74,569.99 W |
| 250 hp | 186,425 W |
| 500 hp | 372,849.9 W |
| 1,000 hp | 745,699.9 W |
Watts to Horsepower conversion table
| Watts | Horsepower |
|---|---|
| 1 W | 0.001341022 hp |
| 2 W | 0.002682044 hp |
| 3 W | 0.004023066 hp |
| 4 W | 0.005364088 hp |
| 5 W | 0.00670511 hp |
| 6 W | 0.008046133 hp |
| 7 W | 0.009387155 hp |
| 8 W | 0.01072818 hp |
| 9 W | 0.0120692 hp |
| 10 W | 0.01341022 hp |
About the horsepower
Mechanical horsepower is about 745.7 watts, still the standard rating for car engines in several markets.
About the watt
The watt is the SI unit of power — one joule per second.
Frequently asked questions
How many watts are in a horsepower?
There are 745.699872 watts in one horsepower.
How many horsepower are in a watt?
There are 0.001341022 horsepower in one watt.
Is this conversion exact?
The ratio between the horsepower and the watt is fixed by definition, so the conversion is exact — the figures shown here are rounded for readability only.
What is 10 horsepower in watts?
10 horsepower equals 7,456.999 watts.