Enter the partial pressure of oxygen (bar) and the fraction of oxygen into the Calculator. The calculator will evaluate the Max Depth. 

Max Depth Formula

MD = PPO2 / FO2


  • MD is the Max Depth ((bar))
  • PPO2 is the partial pressure of oxygen (bar)
  • FO2 is the fraction of oxygen

To calculate Max Depth, divide the partial pressure of oxygen by the fraction of oxygen.

How to Calculate Max Depth?

The following steps outline how to calculate the Max Depth.

  1. First, determine the partial pressure of oxygen (bar). 
  2. Next, determine the fraction of oxygen. 
  3. Next, gather the formula from above = MD = PPO2 / FO2.
  4. Finally, calculate the Max Depth.
  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.

partial pressure of oxygen (bar) = 30

fraction of oxygen = 3.5