From Scuba Diving Calculators:
The Nitrox Calculator v6.0 is an extremely useful desktop software tool to help you calculate your Nitrox Tables. It will calculate your percentages whether your in Salt Water or Fresh Water in Feet or Metric. All you need to do is enter your desired depth and click the compute button and it will automatically calculate the best Nitrox Mix for your next Scuba Dive. Although the Nitrox Calculator is fun and simple to use, even advanced divers will find it handy as it will calculate; Maximum Operating Depth (MOD), Maximum Contingency Depth, Partial Pressure of Oxygen (PO2), Partial Pressure of Nitrogen (PN2), Percent Nitrogen. So whether your just a Beginner Diver or an Advanced Scuba Diver you'll love this handy Desktop Software Program. This version is the first release on CNET Download.com.