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Surface Air Consumption Calculator

This script calculates a diver's SAC rate, in Cubic Feet per Minute, based on his average depth, length of time at that depth, how many PSI of gas were used, and the size of his tank.

The calculation is performed by calculating the volume of gas used  (PSI used * ( Tank volume rating / Tank  pressure rating )), dividing this by the time at depth,  then dividing this result by the pressure at the average depth ((D/33)+1). This result is the Surface Air Consumption (SAC).
  Warning! THESE ARE NOT DIVE TABLES! DO NOT USE THIS INFORMATION FOR DIVE PLANNING! Seek professional advice before using this information!  

Time at Depth (Minutes) Average Depth (feet) PSI used (PSI) 

 

Tank volume rating (CU.FT.) Tank pressure rating (PSI) 

 
 

You consumed CU.FT. of gas, and your SAC is CU.FT/Min.

 
 

 

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