Convert Centipoises to Pounds per inch-second
Convert Centipoises (cP) to Pounds per inch-second (lb/(in·s)) instantly and accurately.
Conversion Formula
lb/(in·s) = cP × 5.599741459e-5
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 Pounds per inch-second
The pound per inch-second (lb/(in·s)) equals 0.45359237/0.0254 ≈ 17.858 Pa·s, used in plastics extrusion and rubber compounding industries where inch-based dimensions are combined with mass-based flow analysis. Polymer melt viscosities at processing temperatures are sometimes quoted in lb/(in·s) in older US extrusion equipment manuals. 1 lb/(in·s) ≈ 17.858 Pa·s = 12 lb/(ft·s).
Quick Reference Table
| Centipoises (cP) | Pounds per inch-second (lb/(in·s)) |
|---|---|
| 1 cP | 5.6 × 10-5 lb/(in·s) |
| 2 cP | 0.000111995 lb/(in·s) |
| 5 cP | 0.000279987 lb/(in·s) |
| 10 cP | 0.000559974 lb/(in·s) |
| 25 cP | 0.00139994 lb/(in·s) |
| 50 cP | 0.00279987 lb/(in·s) |
| 100 cP | 0.00559974 lb/(in·s) |