Convert Pound-force seconds per square foot to Kilopascal-seconds
Convert Pound-force seconds per square foot (lbf·s/ft²) to Kilopascal-seconds (kPa·s) instantly and accurately.
Conversion Formula
kPa·s = lbf·s/ft² × 0.04788025898
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 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
| Pound-force seconds per square foot (lbf·s/ft²) | Kilopascal-seconds (kPa·s) |
|---|---|
| 1 lbf·s/ft² | 0.0478803 kPa·s |
| 2 lbf·s/ft² | 0.0957605 kPa·s |
| 5 lbf·s/ft² | 0.239401 kPa·s |
| 10 lbf·s/ft² | 0.478803 kPa·s |
| 25 lbf·s/ft² | 1.19701 kPa·s |
| 50 lbf·s/ft² | 2.39401 kPa·s |
| 100 lbf·s/ft² | 4.78803 kPa·s |