Viscosity Calculator
Calculate dynamic viscosity, kinematic viscosity, density, and common fluid-viscosity conversions
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Always compare viscosity values at the same temperature and pressure whenever possible.
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Dynamic viscosity measures a fluid's internal resistance to shear or flow. Its SI unit is pascal-second (Pa·s), and centipoise (cP) is also commonly used.
Kinematic viscosity is dynamic viscosity divided by fluid density. Its SI unit is m²/s, while centistokes (cSt) are common in engineering.
One pascal-second equals 1,000 centipoise. Therefore, 1 cP equals 0.001 Pa·s.
Results are generated locally in your browser using ν = μ/ρ, μ = νρ, or μ = τ/(du/dy). Calculations assume consistent units and Newtonian fluid behavior. Real viscosity varies with temperature, pressure, composition, and shear rate, so verify laboratory or manufacturer data for engineering, medical, or safety-critical use.
