Example:
15 horsepower (550 ft·lbf/s) = 11185.498074 W
1 horsepower (550 ft·lbf/s) = 745.699872 W | 1 W = 0.001341 horsepower (550 ft·lbf/s)
Conversion Steps:
15 × (745.699871582 / 1) = 11185.498073735