Nitrox Calculator

Nitrox is the combination of nitrogen and oxygen. Generally nitrox includes 78% of nitrogen and 21% of oxygen and 1% of other gases. EAD also termed as equivalent air depth is used to find the depth of the dive when breathing the air that has the same partial pressure of nitrogen. To determine the equivalent air depth (EAD) in metres and feet provide here the fraction of oxygen (FO2) at various diving depths in metres.

Equivalent Air Depth Calculator

Meters
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Formula:

Equivalent Air Depth = {[((100 - Fraction of Oxygen) / 100) x (Maximum Depth + 10)] / 0.79} - 10

If you are about to dive using Enriched Air Nitrox (EAN), then you should be familiar with your maximum operating depth (MOD).

Example

For a maximum depth of 100 meters and fraction of oxygen as 35, the

EAD = Equivalent Air Depth = {[((100 - 35) / 100) x ((100 + 10) / 0.79)] } - 10
        = {[((100 - 35) / 100) x (110 / 0.79)] } - 10
EAD = Equivalent Air Depth = {[(0.65) x (139.24051)] } - 10
        = 90.5063 - 10
        = 80.5063
Therefore, the value o EAD is 80.5063

Note :This statistics calculator is presented for your own personal use and is to be used as a guide only. Medical and other decisions should NOT be based on the results of this calculator. Although this calculator has been tested, we cannot guarantee the accuracy of its calculations or results.

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