Dive tools & resources
Informational calculators — always cross-check against your training and dive computer.
MOD & O₂ exposure calculator (Nitrox)
Enter your gas mix and target ppO₂.
MOD @ ppO₂ 1.4: 33.8 m (111 ft)
Contingency MOD @ 1.6: 40.0 m
EAD @ MOD: 27.7 m equivalent air
Formulas: MOD = ((ppO₂ / FO₂) − 1) × 10 m. EAD = ((1 − FO₂) / 0.79) × (depth + 10) − 10. CNS % clock and OTU tracking are not modelled here — use dedicated planning software for repetitive dives.
External blending & planning apps
Independent third-party tools. SAFEDIVING is not affiliated.