Convert horsepower to watts
Convert horsepower to watts by entering a value below.
How to Convert Horsepower to Watts
The horsepower (mechanical) and watt are both units of power. 1 horsepower (mechanical) equals 745.699872 watts. This means to convert horsepower to watts, you multiply by 745.699872.
Formula
Step-by-Step Example
Convert 5 hp to watts:
We need to convert horsepower to watts
Since 1 hp = 745.699872 W, multiply by 745.699872
5 × 745.699872 = 3728.49936
5 hp = 3728.49936 W
Horsepower (Mechanical) to Watt Conversion Table
Quick reference table for common horsepower (mechanical) to watt conversions. Click any value for detailed calculation.
| Horsepower (hp) | Watts (W) |
|---|---|
| 0.1 hp | 74.5699872 W |
| 0.5 hp | 372.849936 W |
| 1 hp | 745.699872 W |
| 2 hp | 1491.399744 W |
| 5 hp | 3728.49936 W |
| 10 hp | 7456.99872 W |
| 25 hp | 18642.4968 W |
| 50 hp | 37284.9936 W |
| 100 hp | 74569.9872 W |
About These Units
Horsepower (Mechanical) (hp)
Mechanical horsepower (hp) equals 745.7 watts or 550 foot-pounds per second. Horsepower rates car engines (average car: 150-300 hp), boat motors, and industrial equipment. Defined by James Watt based on horse-powered mill work. One hp can lift 550 pounds one foot in one second.
Watt (W)
The watt (W) is the SI unit of power equal to one joule per second. Watts measure electrical power consumption (LED bulb: 10W, microwave: 1000W), light bulb brightness, and device power ratings. One kilowatt equals 1,000 watts. Named after inventor James Watt.
Frequently Asked Questions
How do I convert horsepower to watts?
To convert horsepower to watts, multiply the value by 745.699872. For example, 10 hp = 7456.99872 W.
How many watts are in 1 horsepower (mechanical)?
1 horsepower (mechanical) equals 745.699872 watts.
What is the formula for horsepower to watts?
The formula is: W = hp × 745.699872.