Description
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, gas blending, buoyancy modeling, and more.
Built for real diving conditions: high-contrast display for bright sunlight, large buttons for wet hands, and every task completable in under 30 seconds.
DIVE PLANNING & GAS CALCULATORS
Best Mix / MOD Calculator
Find the optimal nitrox or trimix mix for any target depth, or calculate maximum operating depth for a given gas blend. Perfect for enriched air divers planning recreational or technical dives.
EAD / PPO₂ / END Gas Analyzer
Analyze equivalent air depth, partial pressure of oxygen, and equivalent narcotic depth. Color-coded safety warnings for gas density, oxygen toxicity, and narcosis limits.
Gas Usage Planner
Calculate gas consumption across multi-level dive profiles including ascent, safety stops, and deco. Supports Rule of Thirds and Rule of Sixths with visual warnings.
RMV / SAC Rate Calculator
Determine your respiratory minute volume and surface air consumption from actual dive data. Track your breathing rate over time. Supports doubles and sidemount.
Buoyancy & Weight Calculator
Model any configuration: wetsuit, drysuit, single tank, twinset, sidemount, stages, and custom gear. Failure scenario analysis for wing failure, flooded drysuit, and lost cylinder.
Gas Blender
Plan nitrox and trimix fills step by step with Van der Waals compressibility corrections. Supports helium, oxygen, and air bank mixing with optimal fill ordering.
Mix / Top-Up Calculator
Calculate the resulting gas mix when topping up a partially filled cylinder. Includes temperature and altitude correction.
Unit Converter
Convert between metric and imperial: bar/PSI, meters/feet, °C/°F, liters/cubic feet, kg/lbs, and breathing rate units.
DECOMPRESSION PLANNER (Premium)
Plan technical dives with Bühlmann ZH-L16C and configurable gradient factors. Build multi-level profiles with unlimited segments and gas switches. Full decompression schedule with:
- Runtime, TTS, ascent pressure, and ceiling profiles
- CNS% and OTU oxygen exposure tracking
- Gas density and consumption per cylinder
- 9 automatic contingency scenarios — deeper, longer, lost gas, buddy out-of-air
- Repetitive dive planning with tissue saturation carried forward
- Share dive plans via QR code, deep link, or clipboard
- Export printable deco tables and slate images for underwater reference
Whether you're planning a 40m trimix dive or a simple nitrox bounce, the deco planner handles it.
REFERENCE & LEARNING
- 70+ illustrated dive hand signals with search
- 40+ cylinder specs from Faber, Luxfer, Catalina, and more
- 11 built-in tutorials on gas physics, decompression theory, and dive planning — in 6 languages
CERTIFICATION WALLET
Store your dive certification cards from 20+ agencies: PADI, SSI, NAUI, TDI, GUE, CMAS, BSAC, RAID, and more. Searchable database of 800+ certifications. Keep your diver profile with insurance and emergency contacts always accessible.
DESIGNED FOR DIVERS, BY A DIVER
- Offline-first — every tool works without internet
- Safety-critical math — Decimal.js precision, no floating-point errors
- Phone and tablet optimized layouts
- 6 languages: English, German, Turkish, Swedish, Russian, Polish
- Light, dark, and automatic themes
- No ads. No tracking. Privacy-focused.
10 tools completely free. Decompression Planner available as a one-time lifetime purchase or monthly subscription.
From checking your best nitrox mix on the dive boat to planning a multi-gas decompression dive at home — Dive Kit is the scuba diving toolkit that's fast, accurate, and always ready.
Terms of Use: https://divekit.app/terms
What's New in Version 2.2.2
- Trimix support for Gas Blender & Mix Calculator — full trimix/heliox blending with helium
- Duplicate existing deco plans with one tap
- "Plan Next Dive" button — quickly create repetitive dives from your current plan
- Plan cards now show Run Time, TTS, and CNS stats with color-coded warnings
- Repetitive dive chains are visually grouped on the plan list
- Share QR codes as images via the system share sheet
- Deco plan results are now cached — reopen plans instantly
- Gear buoyancy uses a Sinks/Floats toggle for easier input
- Gas weight shown at fill pressure and 50 bar reserve in buoyancy calculator
- Larger, bolder input text for better readability
- Improved buoyancy accuracy with updated cylinder, regulator, and rigging values
- Renamed "Turn Pressure" to "Ascent Pressure" and "Total Time" to "Run Time"
- Tutorial glossary with key abbreviations (TTS, RT, AP, CNS, OTU)