Convert Pounds per day to Milligrams per minute
Convert Pounds per day (lb/d) to Milligrams per minute (mg/min) instantly and accurately.
Conversion Formula
mg/min = lb/d × 314.9947014
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 Milligrams per minute
The milligram per minute (mg/min) equals 10⁻⁶/60 ≈ 1.667×10⁻⁸ kg/s, the preferred unit for laboratory peristaltic pump output and aerosol generator calibration. Metered-dose inhalers deliver 100-500 µg of active compound per actuation; at 1 actuation per minute that is 0.1-0.5 mg/min. 1 mg/min = 1/60 mg/s ≈ 1.667×10⁻⁸ kg/s.
Quick Reference Table
| Pounds per day (lb/d) | Milligrams per minute (mg/min) |
|---|---|
| 1 lb/d | 314.995 mg/min |
| 2 lb/d | 629.989 mg/min |
| 5 lb/d | 1574.97 mg/min |
| 10 lb/d | 3149.95 mg/min |
| 25 lb/d | 7874.87 mg/min |
| 50 lb/d | 15749.7 mg/min |
| 100 lb/d | 31499.5 mg/min |