TAG Helix — Free Dive Planner | Bühlmann ZHL-16C

Plan Your Dive — Recreational and Technical

TAG Helix is a free online dive planner powered by the Bühlmann ZHL-16C decompression algorithm with configurable gradient factors. Plan recreational no-stop dives, nitrox dives, and full technical decompression dives. Calculate NDL limits, decompression stops, gas consumption, MOD, CNS oxygen toxicity, and OTU exposure.

Features: Visual decompression profiles · Bühlmann ZHL-16C · Gradient factor (GF Low / GF High) · Nitrox and trimix gas planning · SAC rate calculator · CNS and OTU tracking · Gas consumption calculator · Technical dive planning · Recreational dive planning

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learn | Dive Planning Buddy

Dive Planning Buddy manages 3 data types including dive plans. Helps you organize, track, and share your work in 1 place for teams and solo users.