Planning
Dive calculators
Reference tools for dive planning. Use these alongside your training, dive computer, and good judgement — not instead of them.
Weight Planner
Estimate a starting lead weight for your exposure suit, cylinder, and water type. Always verify with an in-water buoyancy check.
SAC / RMV Calculator
Calculate your Surface Air Consumption and Respiratory Minute Volume from a completed dive to inform future gas planning.
Gas Planner
Plan your available gas, turn pressure, and rock-bottom reserve for a planned dive. Supports solo and buddy planning.
Nitrox MOD / EAD
Calculate the Maximum Operating Depth and Equivalent Air Depth for a nitrox mix. Includes oxygen toxicity warnings.
No-Fly Time
Estimate the earliest safe time to board a flight after diving, based on DAN and certification agency guidelines.
Dive Window / Tides
Use DiveSphere site data and tide information to find the best planning window for tide-sensitive sites.
DiveSphere calculators provide reference estimates for dive planning. They are not a substitute for a dive computer, decompression software, certified dive training, or professional dive guidance. Always dive within your training and certification limits, follow local regulations, and plan conservatively with your buddy or dive team.