Convert Pounds per square foot per hour to Milligrams per square metre per minute
Convert Pounds per square foot per hour (lb/(ft²·h)) to Milligrams per square metre per minute (mg/(m²·min)) instantly and accurately.
Conversion Formula
mg/(m²·min) = lb/(ft²·h) × 81373.79394
About Pounds per square foot per hour
The pound per square foot per hour (lb/(ft²·h)) equals 0.45359237/(0.09290304 × 3600) ≈ 1.356 × 10⁻³ kg/(m²·s). It is used in US heat and mass transfer texts (e.g., Perry's Chemical Engineers' Handbook) for mass flux through surfaces in drying, absorption, and distillation operations using consistent BTU-lb-h units. 1 lb/(ft²·h) ≈ 1.356 g/(m²·s).
About Milligrams per square metre per minute
The milligram per square metre per minute (mg/(m²·min)) equals 10⁻⁶/60 ≈ 1.667 × 10⁻⁸ kg/(m²·s). It appears in pharmaceutical dissolution testing and transdermal drug-delivery patch characterisation, where drug release rates measured minute-by-minute are compared to in-vivo absorption data. 1 mg/(m²·min) = 60 mg/(m²·h).
Quick Reference Table
| Pounds per square foot per hour (lb/(ft²·h)) | Milligrams per square metre per minute (mg/(m²·min)) |
|---|---|
| 1 lb/(ft²·h) | 81373.8 mg/(m²·min) |
| 2 lb/(ft²·h) | 162748 mg/(m²·min) |
| 5 lb/(ft²·h) | 406869 mg/(m²·min) |
| 10 lb/(ft²·h) | 813738 mg/(m²·min) |
| 25 lb/(ft²·h) | 2034340 mg/(m²·min) |
| 50 lb/(ft²·h) | 4068690 mg/(m²·min) |
| 100 lb/(ft²·h) | 8137380 mg/(m²·min) |