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

JavaScript is required to use the interactive planner. Please enable JavaScript in your browser.

Gas Calculator | Dive Planning Buddy

Gas Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.

Pages

About Pete Finlay — About Pete Finlay on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Academy — Academy on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Academy Article — Academy Article on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Api Dashboard — Api Dashboard on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Api Docs — Api Docs on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Dive Planner — Dive Planner on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
External Comparison — External Comparison on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Gas Blender Calculator — Gas Blender Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Gas Calculator — Gas Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Help Assistant — Help Assistant on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Landing
Learn Index — Learn Index on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Privacy Page — Privacy Page on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
SEO Page — SEOPage on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Saved Plans — Saved Plans on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Settings Page — Settings Page on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Shared Plan — Shared Plan on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Terms Page — Terms Page on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
User Guide — User Guide on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Validation Runner — Validation Runner on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Buhlmann Algorithm — learn/Buhlmann Algorithm on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Buoyancy Control Diving — learn/Buoyancy Control Diving on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / CNS Calculator — learn/CNSCalculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Decompression Planner — learn/Decompression Planner on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Decompression Stops Guide — learn/Decompression Stops Guide on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Dive Planning Guide — learn/Dive Planning Guide on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Dive Tables Vs Computers — learn/Dive Tables Vs Computers on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / END Calculator — learn/ENDCalculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Gas Consumption Calculator — learn/Gas Consumption Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Gas Density Diving — learn/Gas Density Diving on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Gradient Factors Explained — learn/Gradient Factors Explained on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Helium Diving — learn/Helium Diving on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / MOD Calculator — learn/MODCalculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Nitrogen Narcosis — learn/Nitrogen Narcosis on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Nitrox Calculator — learn/Nitrox Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Nitrox Vs Air — learn/Nitrox Vs Air on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / No Decompression Limits — learn/No Decompression Limits on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / OTU Calculator — learn/OTUCalculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Oxygen Toxicity Diving — learn/Oxygen Toxicity Diving on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Recreational Dive Planner — learn/Recreational Dive Planner on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Repetitive Dive Planning — learn/Repetitive Dive Planning on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / SAC Calculator — learn/SACCalculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Technical Dive Planner — learn/Technical Dive Planner on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Technical Diving Equipment — learn/Technical Diving Equipment on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Technical Diving Guide — learn/Technical Diving Guide on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / Trimix Calculator — learn/Trimix Calculator on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Learn / What Is Trimix — learn/What Is Trimix on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.
Admin / Validation Checker — admin/Validation Checker on Dive Planning Buddy. Dive Planning Buddy manages 3 data types including dive plans.