Convert Pounds per day to Pounds per hour
Convert Pounds per day (lb/d) to Pounds per hour (lb/h) instantly and accurately.
Conversion Formula
lb/h = lb/d × 0.04166666667
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 Pounds per hour
The pound per hour (lb/h) equals 0.45359237/3600 ≈ 1.260×10⁻⁴ kg/s, the dominant unit in US process engineering and steam-boiler rating. Packaged steam boilers are rated in lb/h of steam output (typical range 100-2 000 lb/h); HVAC cooling-coil latent loads are calculated in lb/h of moisture; flue-gas emission inventories are reported in lb/h per stack. 1 lb/h ≈ 1.260×10⁻⁴ kg/s.
Quick Reference Table
| Pounds per day (lb/d) | Pounds per hour (lb/h) |
|---|---|
| 1 lb/d | 0.0416667 lb/h |
| 2 lb/d | 0.0833333 lb/h |
| 5 lb/d | 0.208333 lb/h |
| 10 lb/d | 0.416667 lb/h |
| 25 lb/d | 1.04167 lb/h |
| 50 lb/d | 2.08333 lb/h |
| 100 lb/d | 4.16667 lb/h |