Reynolds Number Calculator is a free online tool that displays the flow pattern for the different liquid flow situations. CoolGyan’S online Reynolds number calculator tool makes the calculation faster and it displays the fluid flow in a fraction of seconds.

## How to Use the Reynolds Number Calculator?

The procedure to use the Reynolds number calculator is as follows:

**Step 1:** Enter the density, viscosity, diameter value in the input field

**Step 2:** Now click the button “Submit” to get the value

**Step 3:** Finally, the Reynolds number for the given inputs will be displayed in the new window

### What is Meant by the Reynolds Number?

In Physics, the Reynolds number (Re) is defined as the dimensionless quantity, which is used to find the flow patterns for the fluids. It is mostly used in fluid mechanics. It determines whether the flow of fluid is laminar or turbulent. If the Reynolds number is less than 2000, then the flow of liquid is laminar. If the Reynolds number is greater than 4000, then the fluid flow is turbulent. The formula to calculate the Reynolds number is

Reynolds Number = Inertial Force/ Viscous Force

It means that Re is the product of velocity, density, length divided by the viscosity coefficient.