Dynamic Viscosity Converter – Pa·s, cP, lb/ft·s, cSt

Dynamic Viscosity Converter

Convert dynamic viscosity (μ) and kinematic viscosity (ν) between Pa·s, mPa·s, cP, lb/ft·s, and cSt.

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Conversion Factors

Unit	To Pa·s	From Pa·s
mPa·s / cP	× 0.001	× 1000
lb/ft·s	× 1.48816	÷ 1.48816

Kinematic viscosity:
$\nu (\mathrm{m^2/s}) = \frac{\mu (\mathrm{Pa \cdot s})}{\rho (\mathrm{kg/m^3})}$
$1 \, \mathrm{cSt} = 1 \, \mathrm{mm^2/s} = 10^{-6} \, \mathrm{m^2/s}$

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Interactive Converter

Enter μ and ρ → get ν in cSt

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Water Viscosity Table

Temp (°C)	μ (mPa·s)	ν (mm²/s)
20	1.002	1.004
50	0.547	0.556
100	0.282	0.294

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Examples

1. Pump Sizing
   Water at 80 °C → μ = 0.355 mPa·s = 0.355 cP

2. Reynolds Number
   ν = 0.4 mm²/s → Re = vD/ν

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Pro Tip: Use cP for liquids, cSt for flow calculations.