Reynolds Number Calculator

Dimensionless number for fluid flow regime

Note: Re = ρvD/μ. Re < 2300 laminar; Re > 4000 turbulent.

Flow

Density (kg/m³)

Velocity (m/s)

Diameter (m)

Viscosity (Pa·s)

⚠️ For educational purposes only. Verify results with a qualified professional when making important decisions.

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