Convert Foot-Pounds per Minute to BTU per Hour
Convert Foot-Pounds per Minute (ft⋅lbf/min) to BTU per Hour (BTU/h) instantly and accurately.
Conversion Formula
BTU/h = ft⋅lbf/min × 0.07710404781
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.
About BTU per Hour
One BTU per hour (BTU/h) ≈ 0.2931 W - the dominant HVAC capacity unit in the US and Canada. Room air conditioners are universally rated in BTU/h: 12,000 BTU/h = 1 ton of refrigeration = 3,517 W. Home furnaces range from 40,000-150,000 BTU/h. Office building cooling demand is calculated in BTU/h per ft². Engineers convert: BTU/h × 0.2931 = W; or W × 3.412 = BTU/h. 1 BTU/h = 0.29307 W.
Quick Reference Table
| Foot-Pounds per Minute (ft⋅lbf/min) | BTU per Hour (BTU/h) |
|---|---|
| 1 ft⋅lbf/min | 0.077104 BTU/h |
| 2 ft⋅lbf/min | 0.154208 BTU/h |
| 5 ft⋅lbf/min | 0.38552 BTU/h |
| 10 ft⋅lbf/min | 0.77104 BTU/h |
| 25 ft⋅lbf/min | 1.9276 BTU/h |
| 50 ft⋅lbf/min | 3.8552 BTU/h |
| 100 ft⋅lbf/min | 7.7104 BTU/h |