Free Viscosity Calculator

Convert between dynamic and kinematic viscosity using the fluid density.

Pa-s
kg/m^3

Kinematic Viscosity

0.0000010 m^2/s

Kinematic Viscosity (cSt)1.000 cSt

Kinematic Viscosity vs Dynamic Viscosity (mu)

Viscosity Conversion

Dynamic viscosity measures the shear resistance of a fluid. Kinematic viscosity is the ratio of dynamic viscosity to density.

Formula

nu = mu / rho

where mu is dynamic viscosity (Pa-s), rho is density (kg/m^3), and nu is kinematic viscosity (m^2/s). Kinematic viscosity is what appears in the Reynolds number formula.

Example Calculation

Water at 20 deg C: mu = 0.001 Pa-s, rho = 998 kg/m^3.

  1. 01nu = 0.001 / 1000 = 1.0 x 10^-6 m^2/s
  2. 02In centistokes: 1.0 x 10^-6 x 10^6 = 1.0 cSt

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