Calculate air viscosity and density based on temperature and pressure.
Environmental Factors
Viscosity Results
Enter air conditions to calculate viscosity
Quick Reference
νKinematic Viscosity
μDynamic Viscosity (Sutherland)
ρAir Density (Ideal Gas)
RGas Constant for Air (287 J/kg·K)
Overview
Kinematic viscosity represents the ratio of dynamic viscosity to density. For air, it changes significantly with temperature and pressure. It's a key parameter in fluid dynamics, used to calculate Reynolds numbers and predict air flow behavior.
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Pro Tips
As temperature increases, air viscosity actually increases (unlike liquids).
Kinematic viscosity is inversely proportional to pressure.
At sea level (15°C, 1013 hPa), air kinematic viscosity is approx 1.48 × 10⁻⁵ m²/s.
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Fun Facts
"The 'Stokes' (St) is a unit of kinematic viscosity named after Sir George Gabriel Stokes."
"Air is about 50 times less viscous than water at room temperature."
