Watts to Horsepower Conversion

About Watts to Horserpower Converter

On this page you can convert watts to horsepower with decimal digits option. horsepower is calculated from the watts as a SI unit for measuring power is calculated. You can also list the conversion table below for horserpower value.

How Many Horsepower in a Watts?

There are 0.00134102209 Horsepower in a watt.

Definitions:
1 ft = 0.3048 m
1 lb = 0.453592376 kg
g = 9.80665 m/s²
1 W = 1 J/s = 1 N·m/s = 1 (kg·m/s²) (m/s)

How to Calculate Horsepower to Watts

1 W = 1 J/s = 1 N·m/s  = 1 (kg·m / s2) (m/s)
1 Watt = 1 Joule per second
1 Watt = 1 Newton meter per second
1 Kilowatt = 1,000 Watts

by definition
1 hp = 550 ft·lbf/s // ft: feet, lb: punds, s: second
1 ft = 0.3048 m
1 lb = 0.453592376 kg

1 hp = 550 x 0.3048 x 0.453592376 m·kgf/s
1 hp = 76.04022591264 kgf·m/s
applying gravity constant
1 hp = 745.699872 N·m/s

1 N m/s = 1 hp / 745.699872
1 N m/s = 0.00134102208884 hp
1 N m/s = 0.00134102209 hp (approximately)

so where the watt is equal to
1 W = 1 N·m/s
1 Watts = 0.00134102209 hp