Reynolds Number Calculator

Calculate the Reynolds number using: $$ Re = \frac{\rho\, v\, L}{\mu} $$

* Enter the fluid density (kg/m³), flow velocity (m/s), characteristic length (m), and dynamic viscosity (Pa·s).

Step 1: Enter Parameters

Fluid Density, $ \rho $ (kg/m³):

e.g., 1000 kg/m³ for water

Flow Velocity, $ v $ (m/s):

e.g., 1 m/s

Characteristic Length, $ L $ (m):

e.g., 0.1 m

Dynamic Viscosity, $ \mu $ (Pa·s):

e.g., 0.001 Pa·s for water

Calculated Reynolds Number