Enter the allowable stress (PSI), the wall thickness (in), and the outside diameter (in) into the calculator to determine the Pipe Pressure. 

Pipe Pressure Formula

The following formula is used to calculate the Pipe Pressure.

Ppipe = (2*S*T/D)

  • Where Ppipe is the Pipe Pressure (psi)
  • S is the allowable stress (PSI) 
  • T is the wall thickness (in) 
  • D is the outside diameter (in) 

How to Calculate Pipe Pressure?

The following example problems outline how to calculate the Pipe Pressure.

Example Problem #1

  1. First, determine the allowable stress (PSI). In this example, the allowable stress (PSI) is given as 10 .
  2. Next, determine the wall thickness (in). For this problem, the wall thickness (in) is given as  5 .
  3. Next, determine the outside diameter (in). In this case, the outside diameter (in) is found to be 3.
  4. Finally, calculate the Pipe Pressure using the formula above: 

Ppipe = (2*S*T/D)

Inserting the values from above and solving yields: 

Ppipe = (2*10*5/3) = 33.33 (psi)

Example Problem #2

Using the same method as above, determine the variables required by the equation. For this example problem, these are provided as:

allowable stress (PSI) = 100

wall thickness (in) = 7

outside diameter (in) = 8

Enter these given values yields: 

Ppipe = (2*100*7/8) = 175 (psi)