Convert Long hundredweights per day to Grains per minute
Convert Long hundredweights per day (cwt/d) to Grains per minute (gr/min) instantly and accurately.
Conversion Formula
gr/min = cwt/d × 544.4444444
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.
About Grains per minute
The grain per minute (gr/min) equals 6.479891×10⁻⁵/60 ≈ 1.080×10⁻⁶ kg/s. This unit appears in HVAC humidity engineering: moisture added or removed from conditioned air is traditionally expressed in grains of water per pound of dry air per minute in US practice. A whole-house humidifier may evaporate 300-600 gr/min at design load. 1 gr/min ≈ 1.080×10⁻⁶ kg/s.
Quick Reference Table
| Long hundredweights per day (cwt/d) | Grains per minute (gr/min) |
|---|---|
| 1 cwt/d | 544.444 gr/min |
| 2 cwt/d | 1088.89 gr/min |
| 5 cwt/d | 2722.22 gr/min |
| 10 cwt/d | 5444.44 gr/min |
| 25 cwt/d | 13611.1 gr/min |
| 50 cwt/d | 27222.2 gr/min |
| 100 cwt/d | 54444.4 gr/min |