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Watts to Horsepower Calculator

Convert electrical power in watts to mechanical horsepower.

W

How Watts to HP works

Horsepower (HP) is primarily used to measure the mechanical output of engines and motors.

One mechanical horsepower equals roughly 745.7 watts. Electrical horsepower is slightly different, defined as exactly 746 watts, but both are used interchangeably in modern engineering.

Formula
1HP = Watts ÷ 745.7

1 Mechanical HP = 745.699872 W.

Watts to HP conversion table

Reference Table4 rows
Common wattage converted to horsepower.
Watts↕Mechanical Horsepower↕
500 W
0.67 HP
745.7 W
1 HP
1,500 W
2.01 HP
5,000 W
6.71 HP
💡 Click any row to auto-fill the calculator aboveClick column headers to sort

FAQ: Watts to HP

How do you convert watts to horsepower?

Divide the power in watts by 745.7 (for mechanical horsepower) or 746 (for electrical horsepower).

How many watts is 1 HP?

One mechanical horsepower is 745.7 watts, and one electrical horsepower is exactly 746 watts.

Tools related to Watts to HP

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