Freediving Tools
Calculators and training aids built specifically for freedivers. All tools run client-side — no account required.
Breathing Table Generator
Generate personalised CO₂ and O₂ training tables with a live countdown timer. Set your starting hold time and let the app pace your session.
Open toolarrow_forwardDepth & Pressure Calculator
Convert between metres, feet, ATM, bar, and msw. Calculate pressure and lung volume compression at any freediving depth.
Open toolarrow_forwardDive Log
Track your freediving sessions locally in your browser. Log depth, duration, discipline, and notes. Export your history as CSV anytime.
Open toolarrow_forwardPre-Dive Safety Checklist
Run through 30+ critical safety checks before every session — buddy, conditions, gear, and personal readiness. Printable and saved between visits.
Open toolarrow_forwardBreath-Hold Progress Tracker
Log your static apnea sessions and track personal bests over time. Sparkline chart shows your progression at a glance. Export to CSV anytime.
Open toolarrow_forwardWeight & Wetsuit Calculator
Calculate your ideal ballast weight for freediving based on body weight, wetsuit thickness, and water type. Includes a wetsuit thickness guide for all Indian dive sites.
Open toolarrow_forwardMore tools coming soon — surface interval planner and equalisation depth tracker.