Convert Pounds per foot-hour to Centipoises
Convert Pounds per foot-hour (lb/(ft·h)) to Centipoises (cP) instantly and accurately.
Conversion Formula
cP = lb/(ft·h) × 0.4133788732
About Pounds per foot-hour
The pound per foot-hour (lb/(ft·h)) equals 0.45359237 / (0.3048 × 3600) ≈ 4.134×10⁻⁴ Pa·s. It appears in US heat-transfer and mass-transfer textbooks (e.g., McCabe, Smith & Harriott) where viscosity enters the Reynolds number using consistent hour-based units alongside BTU, ft, and lb quantities. Water at 20 °C is ≈2.42 lb/(ft·h). 1 lb/(ft·h) ≈ 4.134×10⁻⁴ 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
| Pounds per foot-hour (lb/(ft·h)) | Centipoises (cP) |
|---|---|
| 1 lb/(ft·h) | 0.413379 cP |
| 2 lb/(ft·h) | 0.826758 cP |
| 5 lb/(ft·h) | 2.06689 cP |
| 10 lb/(ft·h) | 4.13379 cP |
| 25 lb/(ft·h) | 10.3345 cP |
| 50 lb/(ft·h) | 20.6689 cP |
| 100 lb/(ft·h) | 41.3379 cP |