Enter the stack volumetric flow rate (ft^3/min) and the stack diameter (ft) into the Stack Exit Velocity Calculator. The calculator will evaluate the Stack Exit Velocity.

## Stack Exit Velocity Formula

The following two example problems outline the steps and information needed to calculate the Stack Exit Velocity.

SEV = VFR / (pi*D^2/4)

Variables:

- SEV is the Stack Exit Velocity (ft/min)
- VFR is the stack volumetric flow rate (ft^3/min)
- D is the stack diameter (ft)

To calculate the stack exit velocity, divide the stack volumetric flow rate by the stack area.

## How to Calculate Stack Exit Velocity?

The following steps outline how to calculate the Stack Exit Velocity.

- First, determine the stack volumetric flow rate (ft^3/min).
- Next, determine the stack diameter (ft).
- Next, gather the formula from above = SEV = VFR / (pi*D^2/4).
- Finally, calculate the Stack Exit Velocity.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

stack volumetric flow rate (ft^3/min) = 300

stack diameter (ft) = 4

SEV = VFR / (pi*D^2/4)** **= ?