Convert Centipoises to Pound-force seconds per square inch
Convert Centipoises (cP) to Pound-force seconds per square inch (lbf·s/in²) instantly and accurately.
Conversion Formula
lbf·s/in² = cP × 1.450377377e-7
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.
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
| Centipoises (cP) | Pound-force seconds per square inch (lbf·s/in²) |
|---|---|
| 1 cP | 1.45 × 10-7 lbf·s/in² |
| 2 cP | 2.901 × 10-7 lbf·s/in² |
| 5 cP | 7.252 × 10-7 lbf·s/in² |
| 10 cP | 1.45 × 10-6 lbf·s/in² |
| 25 cP | 3.626 × 10-6 lbf·s/in² |
| 50 cP | 7.252 × 10-6 lbf·s/in² |
| 100 cP | 1.45 × 10-5 lbf·s/in² |