Convert Horsepower (mechanical) to Foot-pound per second

One hp equals 550 ft·lbf/s. This converter allows you to easily convert between Horsepower (mechanical) and Foot-pound per second in real time.

Formula

hp × 550 = ft·lbf/s

Example: 1 hp = 550 ft·lbf/s

What is Horsepower (mechanical)?

Horsepower is a unit of power devised by James Watt to compare steam engine performance to the work of draft horses. One mechanical horsepower equals approximately 745.7 watts. Car engine output is commonly described in horsepower, with typical passenger cars producing 100 to 200 hp and sports cars 300 to 600 hp. In the United States, horsepower remains the standard measure for engine power, vehicle performance, and industrial motor ratings.

What is Foot-pound per second?

The foot-pound per second is the fundamental unit of power in the imperial system, representing one foot-pound of work performed per second. It equals approximately 1.356 watts. Historically, James Watt defined one horsepower as 550 foot-pounds per second, making this unit the foundation of the horsepower concept. While rarely used directly in modern practice, it appears in engineering unit conversions and historical technical literature.