Pound-force second per square foot (lbf·s/ft²)
US force-based unit of dynamic viscosity, equal to one slug per foot per second.
What is a pound-force second per square foot?
- Symbol
- lbf·s/ft²
- Quantity
- Dynamic Viscosity
- Unit system
- US customary
- Definition
- US force-based unit of dynamic viscosity, equal to one slug per foot per second.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used in US engineering calculations that work in slugs and pounds-force, such as aerodynamics.
Pound-force second per square foot in other dynamic viscosity units
- 1 lbf·s/ft² ≈ 47.88025898 Pa·sPascal second
- 1 lbf·s/ft² ≈ 47880.25898 mPa·sMillipascal second
- 1 lbf·s/ft² ≈ 478.8025898 PPoise
- 1 lbf·s/ft² ≈ 47880.25898 cPCentipoise
- 1 lbf·s/ft² ≈ 32.17404856 lb/(ft·s)Pound per foot second
- 1 lbf·s/ft² ≈ 0.006944444444 reynReyn
Pound-force second per square foot quick reference
| Pound-force second per square foot | Pascal second | Centipoise | Millipascal second |
|---|---|---|---|
| 1 lbf·s/ft² | ≈ 47.88025898 Pa·s | ≈ 47880.25898 cP | ≈ 47880.25898 mPa·s |
| 10 lbf·s/ft² | ≈ 478.8025898 Pa·s | ≈ 478802.5898 cP | ≈ 478802.5898 mPa·s |
| 100 lbf·s/ft² | ≈ 4788.025898 Pa·s | ≈ 4788025.898 cP | ≈ 4788025.898 mPa·s |
| 1000 lbf·s/ft² | ≈ 47880.25898 Pa·s | ≈ 47880258.98 cP | ≈ 47880258.98 mPa·s |
Where the pound-force second per square foot fits
The next smaller dynamic viscosity unit is the pound per foot second (lb/(ft·s)). 1 lbf·s/ft² ≈ 32.17404856 lb/(ft·s), and 1 lb/(ft·s) ≈ 0.03108095017 lbf·s/ft².
The next larger dynamic viscosity unit is the reyn (reyn). 1 lbf·s/ft² ≈ 0.006944444444 reyn, and 1 reyn = 144 lbf·s/ft².
Frequently asked questions
- How many pascal seconds are in one pound-force second per square foot?
- One pound-force second per square foot ≈ 47.88025898 Pa·s (pascal seconds).
- How many centipoise are in one pound-force second per square foot?
- One pound-force second per square foot ≈ 47880.25898 cP (centipoise).
- How many millipascal seconds are in one pound-force second per square foot?
- One pound-force second per square foot ≈ 47880.25898 mPa·s (millipascal seconds).