Flow rate diameter velocity

This calculator allows you to quickly solve the missing value from 3 variables:
Diameter, Velocity and Flow Rate.

Simply enter in 2 values that you know and leave the third you wish to calculate blank.

Select the units of measurement for all of the fields and select calculate to see the result in your chosen unit of measurement.

This tool is intentionally left as simple and intuitive as possible to ensure that it works as efficiently as possible for you.