Convert Pounds per day to Slugs per second
Convert Pounds per day (lb/d) to Slugs per second (slug/s) instantly and accurately.
Conversion Formula
slug/s = lb/d × 3.597332196e-7
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 Slugs per second
The slug per second (slug/s) equals 14.5939029372 kg/s, derived from the Imperial system where 1 slug = 1 lb·s²/ft ≈ 14.594 kg. The slug is the coherent mass unit in the foot-pound-second system; rocket propulsion engineers using US customary units express mass flow in slug/s. A standard American rocket engine consuming 75 000 lb/s of propellant corresponds to ≈75 000/32.174 ≈ 1 830 slug/s. 1 slug/s = 14.5939029372... kg/s.
Quick Reference Table
| Pounds per day (lb/d) | Slugs per second (slug/s) |
|---|---|
| 1 lb/d | 3.597 × 10-7 slug/s |
| 2 lb/d | 7.195 × 10-7 slug/s |
| 5 lb/d | 1.799 × 10-6 slug/s |
| 10 lb/d | 3.597 × 10-6 slug/s |
| 25 lb/d | 8.993 × 10-6 slug/s |
| 50 lb/d | 1.799 × 10-5 slug/s |
| 100 lb/d | 3.597 × 10-5 slug/s |