The scuba diving calculator and dive planner that works on the boat -- no internet needed. Dive Kit puts 11 professional dive tools in your pocket: nitrox and trimix gas calculators, a full decompression planner with CCR support, gas blending, buoyancy modeling, and more.

Built for real diving conditions: high-contrast display for bright sunlight, large buttons for wet hands, every task under 30 seconds.

🚫 No ads. No tracking. Your data stays on your device.

🔧 DIVE PLANNING & GAS CALCULATORS

⚙️ Best Mix / MOD Calculator
Optimal nitrox or trimix blend for any depth, including helium fraction based on END and gas density. Perfect for EANx divers.

⚙️ Gas Analyzer (EAD / PPO2 / END)
Equivalent air depth, oxygen partial pressure, and narcotic depth. Color-coded warnings for gas density, O2 toxicity, and narcosis.

⚙️ Gas Usage Planner
Gas consumption across multi-level profiles including ascent, safety stops, and deco. Rule of Thirds and Sixths with visual warnings.

⚙️ RMV / SAC Rate Calculator
Respiratory minute volume and surface air consumption from real dive data. Track breathing rate over time. Doubles and sidemount.

⚙️ Buoyancy & Weight Calculator
Model any config: wetsuit, drysuit, single, twinset, sidemount, stages, custom gear. Failure analysis for wing, flooded suit, lost cylinder.

⚙️ Gas Blender
Nitrox and trimix fills with Van der Waals corrections. Save and manage multiple cylinders in one session for consecutive fills.

⚙️ Mix / Top-Up Calculator
Resulting mix when topping up a partial cylinder. Temperature and altitude correction.

⚙️ Unit Converter
Bar/PSI, meters/feet, C/F, liters/cuft, kg/lbs, and breathing rate units.

⚙️ Gas Tank Profiles
Save favorite gas mixes and cylinders as named profiles. Quick Fill loads a profile into any tool with one tap.

📊 DECOMPRESSION PLANNER (Premium)

Technical dives with Buhlmann ZH-L16C and configurable gradient factors. Multi-level profiles with unlimited segments and gas switches.

- CCR Decompression Planning -- setpoint management, variable PPO2 across the dive, and full bailout planning with OC gas switching
- Plan Variants -- save snapshots, compare profiles side by side with graph overlays
- Air Breaks -- oxygen breaks during deco stops
- PPO2 and CNS% per stop, plus OTU exposure
- Configurable O2 narcotic setting
- Gas density and consumption per cylinder
- Automatic contingency scenarios -- deeper, longer, lost gas, buddy OOA
- Repetitive diving with tissue saturation carried forward
- Share via QR code, deep link, or clipboard
- Export deco tables and slate images for underwater reference

Whether you're planning a 40m trimix dive, a CCR dive with bailout, or a nitrox bounce, the deco planner handles it.

📚 REFERENCE & LEARNING

- 90+ illustrated dive hand signals with search
- 30+ cylinder specs from Faber, Luxfer, Catalina
- 11 tutorials on gas physics, deco theory, trimix, and dive planning -- in 6 languages
- Onboarding cards in every tool

🪪 CERTIFICATION WALLET

Cards from 25+ agencies: PADI, SSI, NAUI, TDI, GUE, CMAS, BSAC, RAID. 190+ certifications. Diver profile with insurance and emergency contacts always accessible.

🤿 DESIGNED FOR DIVERS, BY A DIVER

✅ Offline-first -- every tool works without internet
✅ Precision math -- no floating-point errors in gas calculations
✅ Phone and tablet optimized
✅ 6 languages: English, German, Turkish, Swedish, Russian, Polish
✅ Light, dark, and automatic themes

10 tools free. Deco Planner available as a lifetime purchase or monthly subscription.

From checking your best nitrox mix on the dive boat to planning a CCR dive with full bailout -- Dive Kit is the scuba toolkit that's fast, accurate, and always ready. 🌊