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Dive Tools

Diving Tools & Calculators

Free, accurate calculators for recreational and technical divers. Quick calculations for gas management, dive planning, and more.

Nitrox MOD Calculator
Gas Management
Calculate Maximum Operating Depth for Nitrox gas mixes with PPO2 safety limits.
SAC Rate Calculator
Dive Planning
Calculate your Surface Air Consumption rate from dive data for better gas planning.
SAC Rate & RMV Calculator
Dive Planning
Calculate SAC rate from dive data and convert to RMV for tank-independent gas planning.
Gas Consumption Planner
Dive Planning
Plan dive gas requirements from breathing rate, depth, and time with reserve-aware limits.
Dive Unit Converter
Dive Planning
Quickly convert pressure (psi/bar), distance (ft/m), and weight (lb/kg) without changing unit preferences.

Want the theory behind the numbers? Explore practical guides on Nitrox, SAC/RMV, PPO2 limits, and dive safety.