Power
Watts to Horsepower
Convert between watts, kilowatts, mechanical horsepower and metric horsepower (PS).
How this is calculated
- 1 hp = 550 ft·lbf/s = 745.699871582 W
- 1 PS = 75 kgf·m/s = 735.49875 W
- kW = W ÷ 1000
European car makers usually quote PS, US ones hp. PS is about 1.4% smaller, so the same engine scores a slightly higher number in PS.
Checked against known values
- 1 hp = 745.699872 W
- 1 PS = 735.49875 W
- 100 kW = 134.102209 hp