Reynolds Number Calculator

This calculator calculates the Reynolds number for a given fluid flow.

Density (kg/m³)
Velocity (m/s)
Characteristic length (m)
Dynamic viscosity (Pa⋅s)

Reynolds Number:


The Reynolds number is calculated using the following formula:

Re = ρ V L / μ

Where:

The Reynolds number is a dimensionless number that is used to characterize the flow of a fluid. It can be used to predict the type of flow (laminar or turbulent), the frictional forces, and the heat transfer.