Convert between dynamic and kinematic viscosity and common industrial units.
Dynamic viscosity measures resistance to shear; dividing by density gives kinematic viscosity, which is what appears in the Reynolds number. Water at room temperature is about 1 cP and 1 cSt. Lubricant grades are quoted in centistokes while process calculations use pascal seconds, so converting correctly matters.
Viscosity
ν = μ ÷ ρ
ν = μ ÷ ρ Dynamic viscosity measures resistance to shear; dividing by density gives kinematic viscosity, which is what appears in the Reynolds number. Water at room temperature is about 1 cP and 1 cSt.
Lubricant grades are quoted in centistokes while process calculations use pascal seconds, so converting correctly matters.
This calculator takes 2 inputs: Dynamic viscosity, Fluid density. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.