Dive Profile Planner Calculator

Plan recreational dives using no-decompression limits (NDL). Calculates NDL at depth, safety stop duration, pressure group, and repetitive dive guidance.

Inputs

Planned depth (m)

Planned time (min)

Repetitive dive?

Surface interval (min)

Tab to move between fields

Results

No-deco limit (min)

NDL usage (%)

Within NDL?1

Safety stop (min)3

Pressure group (0-25)17

Min surface interval (min)210

Max repetitive depth (m)22

How to Use This Calculator

Enter your planned maximum depth in meters (recreational limit is 40 m).
Set your planned bottom time in minutes.
Indicate if this is a repetitive dive (within 6 hours of the previous dive).
If repetitive, enter your surface interval in minutes to account for residual nitrogen.
Read No-Deco Limit (NDL) in minutes and ensure your planned time stays below 80% of NDL for a safety margin.
Note the Safety Stop duration at 5 m and the Minimum Surface Interval before your next dive.

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