Nitrox Fill Calculator
     
 

 

Starting PSI: psi Ending PSI: psi
Starting O2: % Ending O2: %
Fill using: O2% Max O2: %

This calculator is used to calculate the percentage of O2 required to fill a SCUBA tank to the appropriate Nitrox mixture.  This calculator comes in handy when changing a mixture in a tank using a membrane compressor, or premixing using a stick.

Directions:

Enter the starting pressure, ending pressure, the O2 mixture that is currently in the tank, and the desired ending O2 mixture.  You can also adjust the maximum O2 output of your compressor.  Hit Calculate.

If the Max O2 cannot reach your ending O2 level, a pop-up will be displayed indicating how far down you have to bleed the tank down to.  Also, the Starting pressure will be adjusted.