Scuba Calculators
These calculators help you plan common parts of a dive without doing all the math by hand. Use them as planning tools, not as a substitute for understanding your limits.
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MOD & EAD Calculator
Calculate maximum operating depth and equivalent air depth for common Nitrox mixes using your PO2 limit.
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RMV Calculator
Estimate your breathing rate (RMV) from a known dive so you can plan future gas needs safely and accurately.
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Minimum Gas Reserve Calculator
Build a realistic reserve for two divers to ascend together from planned depth with margin.
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Buoyancy and Weight Calculator
Get a defensible starting weight estimate based on suit, tank, and salt vs fresh water.