Convert Pound-force seconds per square foot to Pounds per foot-hour
Convert Pound-force seconds per square foot (lbf·s/ft²) to Pounds per foot-hour (lb/(ft·h)) instantly and accurately.
Conversion Formula
lb/(ft·h) = lbf·s/ft² × 115826.5748
About Pound-force seconds per square foot
The pound-force second per square foot (lbf·s/ft²) equals (9.80665 × 0.45359237) / 0.3048² ≈ 47.880 Pa·s, numerically identical to slug/(ft·s). It appears in US civil and structural engineering fluid mechanics, pump hydraulics texts, and older API pipeline standards. A key identity: 1 lbf·s/ft² = 1 slug/(ft·s) ≈ 47.880 Pa·s = 478.8 P.
About Pounds per foot-hour
The pound per foot-hour (lb/(ft·h)) equals 0.45359237 / (0.3048 × 3600) ≈ 4.134×10⁻⁴ Pa·s. It appears in US heat-transfer and mass-transfer textbooks (e.g., McCabe, Smith & Harriott) where viscosity enters the Reynolds number using consistent hour-based units alongside BTU, ft, and lb quantities. Water at 20 °C is ≈2.42 lb/(ft·h). 1 lb/(ft·h) ≈ 4.134×10⁻⁴ Pa·s.
Quick Reference Table
| Pound-force seconds per square foot (lbf·s/ft²) | Pounds per foot-hour (lb/(ft·h)) |
|---|---|
| 1 lbf·s/ft² | 115827 lb/(ft·h) |
| 2 lbf·s/ft² | 231653 lb/(ft·h) |
| 5 lbf·s/ft² | 579133 lb/(ft·h) |
| 10 lbf·s/ft² | 1158270 lb/(ft·h) |
| 25 lbf·s/ft² | 2895660 lb/(ft·h) |
| 50 lbf·s/ft² | 5791330 lb/(ft·h) |
| 100 lbf·s/ft² | 11582700 lb/(ft·h) |