Convert Pounds per inch-second to Pounds per foot-second
Convert Pounds per inch-second (lb/(in·s)) to Pounds per foot-second (lb/(ft·s)) instantly and accurately.
Conversion Formula
lb/(ft·s) = lb/(in·s) × 12
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).
About Pounds per foot-second
The pound per foot-second (lb/(ft·s)) equals 0.45359237/0.3048 ≈ 1.4882 Pa·s, the absolute viscosity unit in the foot-pound-second (FPS) system. It appears in legacy US chemical engineering textbooks and fluid mechanics problems stated in USC units. A heavy fuel oil at 50 °C with viscosity 0.050 Pa·s = 0.0336 lb/(ft·s). 1 lb/(ft·s) ≈ 1.4882 Pa·s = 14.882 P.
Quick Reference Table
| Pounds per inch-second (lb/(in·s)) | Pounds per foot-second (lb/(ft·s)) |
|---|---|
| 1 lb/(in·s) | 12 lb/(ft·s) |
| 2 lb/(in·s) | 24 lb/(ft·s) |
| 5 lb/(in·s) | 60 lb/(ft·s) |
| 10 lb/(in·s) | 120 lb/(ft·s) |
| 25 lb/(in·s) | 300 lb/(ft·s) |
| 50 lb/(in·s) | 600 lb/(ft·s) |
| 100 lb/(in·s) | 1200 lb/(ft·s) |