Decompression
Tables Online
Access official dive tables instantly. MN90, MT2019, COMEX & Bühlmann ZH-L16.
Professional interactive tools for safe dive planning.
MN90 Tables
FFESSM / CMAS| Depth | Time | 3m | 6m | 9m |
|---|---|---|---|---|
| 40m | 15 min | — | — | — |
| 40m | 20 min | 2 min | — | — |
| 40m | 25 min | 5 min | 2 min | — |
| 40m | 30 min | 9 min | 5 min | 1 min |
| 40m | 35 min | 16 min | 9 min | 2 min |
Choose Your Table
Official data from verified sources — French Navy, French Official Journal, University of Zurich
MN90 Tables
French Navy 1990 standard. Reference for CMAS/FFESSM certifications (N2-N4). Stops at 3m, 6m, 9m. Max depth 65m.
Open tableMT2019 Tables
French Official Journal 2019. Professional diving standard. 11 appendices covering air, nitrox and heliox.
Open tableCOMEX Tables
Professional & commercial diving tables. Used in offshore, underwater construction and industrial operations.
Learn moreBühlmann ZH-L16
Dr. Bühlmann's model (University of Zurich). Foundation of modern dive computers. ZH-L16C with Gradient Factors.
Open tableWhy use dive tables?
Training — Required for FFESSM certifications (Level 2, 3, 4, Divemaster).
Backup procedure — Emergency backup if dive computer fails.
Understanding — Learn how decompression models work.
Planning — Plan your dives in advance.
Guides & Tools
Educational resources and calculators to support your diving practice
Read the tables
Step-by-step guide: stops, TDT, SDG, successive dives.
FFESSM Levels
N1 to N4, E1 to E4: privileges, CMAS equivalences.
PADI vs FFESSM
Comparison of both certification systems.
MN90 vs MT2019
Differences between the two French standards.
Gas Laws
Boyle, Dalton, Henry: the physics of diving.
Glossary
All diving technical terms explained.
Nitrox Calculator
MOD, EAD, ppO₂ — instant calculations.
Air Consumption
SAC rate, autonomy, safety reserve.
Disclaimer: Data provided for informational purposes only. Always follow your training and use a dive computer. Diving involves inherent risks.