ft·lbf/s

foot pound-force per second

Powerexact by definition

The foot pound-force per second is exactly 1.3558179483314004 watts. It is the underlying unit of the mechanical horsepower, which is defined as 550 of them, and it appears in dynamometer and machine design work where horsepower is too coarse.

1 ft·lbf/s 1.3558179 W