Enter the differential head (psi) and the suction head (psi) into the Shut Off Pressure Calculator. The calculator will evaluate the Shut Off Pressure. 

Shut Off Pressure Formula

The following two example problems outline the steps and information needed to calculate the Shut Off Pressure.

SOP = 1.2* (DH + SH)


  • SOP is the Shut Off Pressure (psi)
  • DH is the differential head (psi) 
  • SH is the suction head (psi) 

To calculate the shut-off pressure, add the differential head to the suction head, then multiply the result by 1.2.

How to Calculate Shut Off Pressure?

The following steps outline how to calculate the Shut Off Pressure.

  1. First, determine the differential head (psi). 
  2. Next, determine the suction head (psi). 
  3. Next, gather the formula from above = SOP = 1.2* (DH + SH).
  4. Finally, calculate the Shut Off Pressure.
  5. 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.

differential head (psi) = 50

suction head (psi) = 30

SOP = 1.2* (DH + SH) = ?