Convert Foot-Pounds per Second to Ton of Refrigeration
Convert Foot-Pounds per Second (ft⋅lbf/s) to Ton of Refrigeration (RT) instantly and accurately.
Conversion Formula
RT = ft⋅lbf/s × 0.000385520239
About Foot-Pounds per Second
One foot-pound per second (ft·lbf/s) ≈ 1.3558 W - the natural power unit in the foot-pound-second (FPS) system. Since 1 mechanical horsepower = exactly 550 ft·lbf/s, the conversion 1 ft·lbf/s = 1/550 hp is exact. Used in FPS structural and fluid dynamics: beam deflection power, pump and turbine output, and ballistic energy-transfer calculations. 19th-century American industry rated waterwheel output in ft·lbf/s before horsepower standardisation. 1 ft·lbf/s = 1.35582 W.
About Ton of Refrigeration
One ton of refrigeration (RT) = 12,000 BTU/h ≈ 3,517 W - the cooling rate to freeze 1 short ton (2,000 lb) of water in 24 hours. This follows from water's latent heat: 144 BTU/lb × 2,000 lb ÷ 24 h = 12,000 BTU/h. US residential AC is 1.5-5 tons; a large commercial building 500-2,000 tons; a hyperscale data centre 50,000-100,000 tons. The RT is deeply embedded in North American HVAC catalogs, load calculation software, and contractor pricing. 1 RT = 3,516.85 W.
Quick Reference Table
| Foot-Pounds per Second (ft⋅lbf/s) | Ton of Refrigeration (RT) |
|---|---|
| 1 ft⋅lbf/s | 0.00038552 RT |
| 2 ft⋅lbf/s | 0.00077104 RT |
| 5 ft⋅lbf/s | 0.0019276 RT |
| 10 ft⋅lbf/s | 0.0038552 RT |
| 25 ft⋅lbf/s | 0.00963801 RT |
| 50 ft⋅lbf/s | 0.019276 RT |
| 100 ft⋅lbf/s | 0.038552 RT |