Convert Micropascal-seconds to Pound-force seconds per square inch
Convert Micropascal-seconds (µPa·s) to Pound-force seconds per square inch (lbf·s/in²) instantly and accurately.
Conversion Formula
lbf·s/in² = µPa·s × 1.450377377e-10
About Micropascal-seconds
The micropascal-second (µPa·s) equals 10⁻⁶ Pa·s, the viscosity range of dilute gases at ambient conditions. Air at 20 °C has a dynamic viscosity of ≈18.5 µPa·s; helium ≈19.6 µPa·s; hydrogen ≈9.0 µPa·s. Gas turbine and aerodynamics calculations routinely work at this scale. 1 µPa·s = 10⁻⁶ Pa·s = 10⁻³ mPa·s = 10⁻⁵ cP.
About Pound-force seconds per square inch
The pound-force second per square inch (lbf·s/in², reyn) equals 144 × 47.880 ≈ 6 894.8 Pa·s. Informally called the "reyn" (after Osborne Reynolds), it is used in US tribology and bearing-design engineering, where oil-film viscosity in heavily loaded contacts is stated in reyn. Turbine bearing oils at operating temperature range 0.5-3 × 10⁻⁶ reyn. 1 reyn ≈ 6 894.8 Pa·s.
Quick Reference Table
| Micropascal-seconds (µPa·s) | Pound-force seconds per square inch (lbf·s/in²) |
|---|---|
| 1 µPa·s | 1.45 × 10-10 lbf·s/in² |
| 2 µPa·s | 2.901 × 10-10 lbf·s/in² |
| 5 µPa·s | 7.252 × 10-10 lbf·s/in² |
| 10 µPa·s | 1.45 × 10-9 lbf·s/in² |
| 25 µPa·s | 3.626 × 10-9 lbf·s/in² |
| 50 µPa·s | 7.252 × 10-9 lbf·s/in² |
| 100 µPa·s | 1.45 × 10-8 lbf·s/in² |