The pipe Length can be calculated when the following values are known:

  • Pipe internal roughness
  • Pipe internal diameter
  • Pipe elevation change
  • Required flow rate
  • Maximum allowed pressure drop


The Pipe Length can be calculated for both Liquids and Gases.  For information about selecting a fluid, see: Fluids Database


For more information about working with gases, see Working with Compressible Fluids


For more information about the theory and formulas used to calculate the pipe length, see Calculation Theory and Method of Solution