Convert Mechanical Horsepower to Foot-Pounds per Minute
Convert Mechanical Horsepower (hp) to Foot-Pounds per Minute (ft⋅lbf/min) instantly and accurately.
Conversion Formula
ft⋅lbf/min = hp × 33000
About Mechanical Horsepower
The mechanical horsepower (hp) is exactly 550 ft·lbf/s ≈ 745.7 W - defined by James Watt by timing mine horses to set a comparable steam engine rating. A typical compact car produces 100-150 hp (75-112 kW); a sports car 300-600 hp; an F1 car ~1,000 hp (745 kW). SAE net horsepower is measured at the flywheel with all accessories fitted. Marine diesel engines, aircraft piston engines, and lawn equipment are still rated in hp. 1 hp = 550 ft·lbf/s = 745.6998715822704 W.
About Foot-Pounds per Minute
One foot-pound per minute (ft·lbf/min) ≈ 0.02260 W. Its historical importance is large: James Watt rated mill horses at ~33,000 ft·lbf/min sustained output and defined 1 mechanical horsepower as exactly 33,000 ft·lbf/min (= 550 ft·lbf/s). The unit is still used for machine-tool power, hydraulic pump output, and low-speed actuator performance in US customary calculations: torque (ft·lbf) × RPM = power in ft·lbf/min. 1 hp = 33,000 ft·lbf/min.
Quick Reference Table
| Mechanical Horsepower (hp) | Foot-Pounds per Minute (ft⋅lbf/min) |
|---|---|
| 1 hp | 33000 ft⋅lbf/min |
| 2 hp | 66000 ft⋅lbf/min |
| 5 hp | 165000 ft⋅lbf/min |
| 10 hp | 330000 ft⋅lbf/min |
| 25 hp | 825000 ft⋅lbf/min |
| 50 hp | 1650000 ft⋅lbf/min |
| 100 hp | 3300000 ft⋅lbf/min |