Diving
Planning calculators for diving — estimates from industry-style inputs.
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Nitrox Blend Calculator
Calculate Maximum Operating Depth (MOD), Equivalent Air Depth (EAD), best mix, and oxygen toxicity limits for Nitrox/EANx diving.
Gas Planning Calculator
Plan your gas supply using SAC rate, depth, and time. Calculates consumption at depth (Boyle's Law), maximum bottom time, turn pressure, and reserve adequacy.
Trimix Blend Calculator
Calculate MOD, Equivalent Narcotic Depth (END), partial pressures, and hypoxic safety for Trimix gas blends used in technical deep diving.
Dive Profile Planner Calculator
Plan recreational dives using no-decompression limits (NDL). Calculates NDL at depth, safety stop duration, pressure group, and repetitive dive guidance.
Buoyancy Calculator
Estimate the lead weight you need for neutral buoyancy based on your body composition, exposure suit, water type, and tank.
Underwater Photography Settings Calculator
Get recommended camera exposure settings for underwater photography based on depth, visibility, ambient light, strobe use, and subject distance.
Dive Trip Cost Calculator
Estimate total dive trip costs including flights, accommodation, dive packages, gear rental, Nitrox fills, food, and insurance.
Dive Log Statistics Calculator
Analyze your diving history to estimate SAC rate, air consumption efficiency, experience level, and depth-to-experience safety ratio.
Dive Equipment Maintenance Calculator
Estimate annual scuba equipment service costs for regulators, BCDs, computers, suits, and tanks based on dive frequency and service intervals.
Instructor-to-Student Ratio Calculator
Determine the maximum and recommended instructor-to-student ratios for scuba courses based on certification level, water conditions, and assistant availability.