Convert Pound-force seconds per square inch to Millipoises
Convert Pound-force seconds per square inch (lbf·s/in²) to Millipoises (mP) instantly and accurately.
Conversion Formula
mP = lbf·s/in² × 68947572.93
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.
About Millipoises
The millipoise (mP) equals 10⁻⁴ Pa·s, an intermediate CGS unit between the micropascal-second gas range and the centipoise liquid range. It is occasionally used in older European scientific literature and in the textile industry for sizing-solution viscosity. Air at 20 °C is ≈ 0.185 mP; a 0.5% polymer solution might read 5-20 mP. 1 mP = 10⁻⁴ Pa·s = 0.1 cP.
Quick Reference Table
| Pound-force seconds per square inch (lbf·s/in²) | Millipoises (mP) |
|---|---|
| 1 lbf·s/in² | 68947600 mP |
| 2 lbf·s/in² | 137895000 mP |
| 5 lbf·s/in² | 344738000 mP |
| 10 lbf·s/in² | 689476000 mP |
| 25 lbf·s/in² | 1.724 × 109 mP |
| 50 lbf·s/in² | 3.447 × 109 mP |
| 100 lbf·s/in² | 6.895 × 109 mP |