Convert Pounds per minute to Long hundredweights per day
Convert Pounds per minute (lb/min) to Long hundredweights per day (cwt/d) instantly and accurately.
Conversion Formula
cwt/d = lb/min × 12.85714286
About Pounds per minute
The pound per minute (lb/min) equals 0.45359237/60 ≈ 7.560×10⁻³ kg/s, the standard unit for US fire-suppression system design (sprinkler flow demand) and HVAC hydronic loop balancing. A fire-sprinkler head at 15 psi discharges roughly 30-40 lb/min of water; industrial humidifiers are rated in lb/min of steam. 1 lb/min ≈ 7.560×10⁻³ kg/s = 60 lb/h.
About Long hundredweights per day
The long hundredweight per day (cwt/d, UK) equals 50.80234544/86400 ≈ 5.880×10⁻⁴ kg/s, encountered in legacy British industrial reports for colliery output, port-handling capacity, and sugar-refinery throughput. Historical British coal-mine productivity was routinely expressed in long cwt per miner per day. 1 long cwt/d ≈ 5.880×10⁻⁴ kg/s = 112 lb/d.
Quick Reference Table
| Pounds per minute (lb/min) | Long hundredweights per day (cwt/d) |
|---|---|
| 1 lb/min | 12.8571 cwt/d |
| 2 lb/min | 25.7143 cwt/d |
| 5 lb/min | 64.2857 cwt/d |
| 10 lb/min | 128.571 cwt/d |
| 25 lb/min | 321.429 cwt/d |
| 50 lb/min | 642.857 cwt/d |
| 100 lb/min | 1285.71 cwt/d |