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Nitrox NDL Reference Table

Resources

Reference tables

Read selected table rows without turning them into clearance

Compare selected no-decompression-limit table entries without interpolation or decompression-planning claims.

High caution Static NDL reference

Planning aid

Selected no-decompression reference rows

This static table shows selected air-table references and equivalent-air-depth rows for common nitrox mixes.

Depth	Air	EAN32 EAD basis	EAN36 EAD basis
12 m / 40 ft	140 min	Use 10 m / 30 ft air table row	Use 9 m / 30 ft air table row
18 m / 60 ft	55 min	Use 14 m / 50 ft air table row	Use 13 m / 40 ft air table row
24 m / 80 ft	30 min	Use 19 m / 60 ft air table row	Use 17 m / 60 ft air table row
30 m / 100 ft	25 min	Use 24 m / 80 ft air table row	Use 21 m / 70 ft air table row
36 m / 120 ft	10 min	Use 29 m / 100 ft air table row	Use 26 m / 90 ft air table row

NDL entries are selected reference rows only. Do not interpolate, extend, or use this table for repetitive, multilevel, altitude, decompression, cold/stressful, or overhead-environment planning.

Best used for

Seeing selected NDL reference rows in one place.
Understanding why EAD table row selection matters.

Check before acting

Do not interpolate or use this as a decompression planner.
Use the table, agency, and dive computer you are actually diving with.

Related resources

Planning boundary: This high-risk topic is educational only. It is not a dive computer, decompression planner, medical clearance, emergency instruction, or technical-diving training.

Formula and source notes

NDL references should be checked against the table, agency, dive computer, and local rules you are actually using. See NOAA Diving Program resources.