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lbf⋅s/ft2\text{lbf}{\cdot}\text{s/ft}^{2}

pound-force second per square foot

Dynamic viscosityexact by definition

The pound-force second per square foot is exactly 47.88025898033584 Pa·s. It is the coherent viscosity unit of the US customary gravitational system, and it is identically the slug per foot second, which is how fluid mechanics texts usually write it.

Watch out: Water at 20 °C is about 2.09 × 10⁻⁵ lbf·s/ft², a number small enough that it is nearly always written in scientific notation and nearly always mis-keyed. The centipoise exists because of exactly this problem.

1 lbf⋅s/ft2\text{lbf}{\cdot}\text{s/ft}^{2} 47.880259 Pa⋅s\text{Pa}{\cdot}\text{s}

One pound-force second per square foot in every dynamic viscosity unit

47,880,300micropascal second (μPa·s)
478,803millipoise (mP)
115,827pound per foot hour (lb/(ft·h))
47,880.3millipascal second (mPa·s)
47,880.3centipoise (cP)
6,944.44microreyn (μreyn)
478.803poise (P)
47.8803pascal second (Pa·s)
32.174pound per foot second (lb/(ft·s))
1pound-force second per square foot (lbf·s/ft²)this unit
0.0478803kilopascal second (kPa·s)
0.00694444reyn (reyn)
Solvers that use dynamic viscosity

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