Enter the total pH value into the pOH Calculator. The calculator will evaluate the pOH. This calculator can also determine the pH given the pOH.

pOH Formula

The following two example problems outline the steps and information needed to calculate the pOH.

pOH = 14 - pH
pH = 14 - pOH
  • pOH is the pOH
  • pH is the total pH value 

To calculate pOH, simply subtract the pH value from 14.

How to Calculate pOH?

The following steps outline how to calculate the pOH.

  1. First, determine the total pH value. 
  2. Next, gather the formula from above = pOH = 14 – pH.
  3. Finally, calculate the pOH.
  4. 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.

the total pH value = 8

pOH = 14 – pH = ?