Decompression
Bottom Time & Decompression Calculator
Model a single-level dive, its direct ascent, or whole-minute mandatory stops with Bühlmann ZHL-16C and explicit gradient factors.
Plan the square profile
m
Allowed range: 1 to 60 m.
min
Allowed range: 1 to 300 min.
%
Allowed range: 21 to 40 %.
m/min
Allowed range: 1 to 18 m/min.
GF low sets the first ceiling anchor; GF high sets the surface limit.
A model output, not a complete dive plan
The calculation assumes instantaneous descent, one constant bottom depth, one O₂/N₂ gas, sea-level pressure, and a constant ascent rate. It does not add an optional safety stop or account for gas supply, oxygen exposure, helium, altitude, workload, previous dives, equipment, or individual susceptibility.
Keep the scenarios separate
This tool starts with rested tissues. Use the repetitive dive model to explore surface-interval tissue carry-over; it intentionally does not create decompression schedules.