Convert Pounds per day to Long hundredweights per day
Convert Pounds per day (lb/d) to Long hundredweights per day (cwt/d) instantly and accurately.
Conversion Formula
cwt/d = lb/d × 0.008928571429
About Pounds per day
The pound per day (lb/d) equals 0.45359237/86400 ≈ 5.249×10⁻⁶ kg/s, used in wastewater engineering for reporting biochemical oxygen demand (BOD) loads, nutrient loadings, and sludge production. US NPDES permits set effluent mass-load limits in lb/d; a municipal WWTP serving 10 000 people generates roughly 1 500-3 000 lb/d of dry sludge solids. 1 lb/d ≈ 5.249×10⁻⁶ kg/s.
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 day (lb/d) | Long hundredweights per day (cwt/d) |
|---|---|
| 1 lb/d | 0.00892857 cwt/d |
| 2 lb/d | 0.0178571 cwt/d |
| 5 lb/d | 0.0446429 cwt/d |
| 10 lb/d | 0.0892857 cwt/d |
| 25 lb/d | 0.223214 cwt/d |
| 50 lb/d | 0.446429 cwt/d |
| 100 lb/d | 0.892857 cwt/d |