Enter the pipe fall (ft) and the pipe length (ft) into the Pipe Slope Calculator. The calculator will evaluate and display the Pipe Slope. 

Pipe Slope Formula

The following formula is used to calculate the Pipe Slope. 

PS = PF / PL * 100

  • Where PS is the Pipe Slope (%)
  • PF is the pipe fall (ft) 
  • PL is the pipe length (ft) 

How to Calculate Pipe Slope?

The following example problems outline how to calculate Pipe Slope.

Example Problem #1:

  1. First, determine the pipe fall (ft). 
    • The pipe fall (ft) is given as: 25.
  2. Next, determine the pipe length (ft). 
    • The pipe length (ft) is provided as: 97.
  3. Finally, calculate the Pipe Slope using the equation above: 

PS = PF / PL * 100

The values given above are inserted into the equation below and the solution is calculated:

PS = 25 / 97 * 100 = 25.77 (%)


Example Problem #2: 

For this problem, the variables needed are provided below:

pipe fall (ft) = 50

pipe length (ft) = 1460

This example problem is a test of your knowledge on the subject. Use the calculator above to check your answer. 

PS = PF / PL * 100 = ?