Convert Pounds per foot-hour to Kilopascal-seconds
Convert Pounds per foot-hour (lb/(ft·h)) to Kilopascal-seconds (kPa·s) instantly and accurately.
Conversion Formula
kPa·s = lb/(ft·h) × 4.133788732e-7
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.
About Kilopascal-seconds
The kilopascal-second (kPa·s) equals 1 000 Pa·s, used for highly viscous materials such as bitumen binders, polymer melts, and pitch at processing temperatures. Bitumen (road asphalt) at 60 °C has a dynamic viscosity of 100-10 000 Pa·s = 0.1-10 kPa·s; hot-melt adhesives at application temperature are 10-100 kPa·s. 1 kPa·s = 1 000 Pa·s = 10 000 P.
Quick Reference Table
| Pounds per foot-hour (lb/(ft·h)) | Kilopascal-seconds (kPa·s) |
|---|---|
| 1 lb/(ft·h) | 4.134 × 10-7 kPa·s |
| 2 lb/(ft·h) | 8.268 × 10-7 kPa·s |
| 5 lb/(ft·h) | 2.067 × 10-6 kPa·s |
| 10 lb/(ft·h) | 4.134 × 10-6 kPa·s |
| 25 lb/(ft·h) | 1.033 × 10-5 kPa·s |
| 50 lb/(ft·h) | 2.067 × 10-5 kPa·s |
| 100 lb/(ft·h) | 4.134 × 10-5 kPa·s |