Horsepower to Watts
Convert horsepower (hp) to watts (W) instantly — with formula and reference table.
hp
W
Quick answer: 1 hp = 745.699872 W. To convert horsepower to watts, multiply by hp × 745.699872.
Converting horsepower to watts
This converter changes a value in horsepower (hp) into watts (W). One horsepower equals 745.699872 W. One mechanical horsepower equals 745.7 watts. The conversion runs entirely in your browser — enter a value and the result updates instantly, in either direction.
Formula
W = hp × 745.699872
Example
Convert 10 hp to W: 10 × 745.699872 = 7456.99872 W.
Horsepower to Watts conversion table
| Horsepower (hp) | Watts (W) |
|---|---|
| 1 hp | 745.699872 W |
| 2 hp | 1491.399744 W |
| 3 hp | 2237.099616 W |
| 5 hp | 3728.49936 W |
| 10 hp | 7456.99872 W |
| 20 hp | 14913.99744 W |
| 25 hp | 18642.4968 W |
| 50 hp | 37284.9936 W |
| 100 hp | 74569.9872 W |
How to use this converter
- Enter a value in the horsepower (hp) field.
- Read the converted value in watts (W) below.
- Type into the W field instead to convert in reverse, or use the swap button.
Frequently asked questions
How many watts are in a horsepower?
1 mechanical horsepower equals 745.7 watts.
How do I convert 5 hp to watts?
5 times 745.7 = 3,728.5 watts.
How many watts is a 100 hp engine?
100 hp equals about 74,570 watts (74.6 kW).