Convert Pound-force seconds per square inch to Centipoises
Convert Pound-force seconds per square inch (lbf·s/in²) to Centipoises (cP) instantly and accurately.
Conversion Formula
cP = lbf·s/in² × 6894757.293
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 Centipoises
The centipoise (cP) equals 10⁻³ Pa·s, numerically equal to 1 mPa·s. It remains the most widely used practical unit in industry because water at 20 °C has a viscosity of almost exactly 1 cP. Process engineers, petroleum analysts, and food technologists all specify viscosity in cP. Motor oil SAE 10W has a cold-viscosity limit of ≈3 500 cP at -25 °C. 1 cP = 10⁻³ Pa·s = 10⁻² P.
Quick Reference Table
| Pound-force seconds per square inch (lbf·s/in²) | Centipoises (cP) |
|---|---|
| 1 lbf·s/in² | 6894760 cP |
| 2 lbf·s/in² | 13789500 cP |
| 5 lbf·s/in² | 34473800 cP |
| 10 lbf·s/in² | 68947600 cP |
| 25 lbf·s/in² | 172369000 cP |
| 50 lbf·s/in² | 344738000 cP |
| 100 lbf·s/in² | 689476000 cP |