Insert the information in the form and the calculator will determine the reynolds number.

What is the reynolds number?

The reynolds number is a factor in the prediction flow patterns in different fluid flow situations by measuring the ratio between intertial and viscous forces.

How to calculate reynolds number?

To calculate reynolds number you should use the following formula:
Re = (ρ * u * L) / µ
where:
Re = reynolds number
ρ = fluid density
u = fluid velocity
L = diameter or length of fluid
µ = fluid viscosity

Why use reynolds number?

The reynolds number is used in order to get some sense of the relationship in fluid flow between intertial forces.