Convert watts to horsepower
Enter the number of watts that you want to convert to horsepower.
How to Convert Watts to Horsepower
The watt and horsepower (mechanical) are both units of power. 1 horsepower (mechanical) equals 745.699872 watts. This means to convert watts to horsepower, you divide by 745.699872.
Formula
Step-by-Step Example
Convert 5 W to horsepower:
We need to convert watts to horsepower
Since 1 hp = 745.699872 W, divide by 745.699872
5 ÷ 745.699872 = 0.0067051104
5 W = 0.0067051104 hp
Watt to Horsepower (Mechanical) Conversion Table
Quick reference table for common watt to horsepower (mechanical) conversions. Click any value for detailed calculation.
| Watts (W) | Horsepower (hp) |
|---|---|
| 0.1 W | 0.0001341022 hp |
| 0.5 W | 0.000670511 hp |
| 1 W | 0.0013410221 hp |
| 2 W | 0.0026820442 hp |
| 5 W | 0.0067051104 hp |
| 10 W | 0.0134102209 hp |
| 25 W | 0.0335255522 hp |
| 50 W | 0.0670511044 hp |
| 100 W | 0.1341022089 hp |
About These Units
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.
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.
Frequently Asked Questions
How do I convert watts to horsepower?
To convert watts to horsepower, divide the value by 745.699872. For example, 10 W = 0.0134102209 hp.
How many horsepower are in 1 watt?
1 watt equals 0.0013410221 horsepower.
What is the formula for watts to horsepower?
The formula is: hp = W ÷ 745.699872.