Online Decompression Planner

Bottom plan

Deco Gases

⚠ Disclaimer: This decompression planning tool is meant to be used by divers certified in decompression diving. It is not a substitute for a dive computer nor formal training. The author cannot be held responsible for how the information it provides is used.

Distance

meters feet

Volume

Liters Cu Ft

GF Low

GF High

Model

Deco PPO2

Deco END (m)

EAN100 Use

Last stop

Ascent rate (m/min)

Descent rate (m/min)

Bottom SAC rate (L/min)

Deco SAC rate (L/min)

Altitude (m)

Pressure at sea (kPa)

Water density (kg/m³)

Deco step (s)

Show asc/descent if > (s)

Switch time (s)

Contigency depth (m)

Contigency time (min)

Information

This online decompression planner is a tool for certified technical divers to help plan decompression dives. Using the plan and the parameters given by the user, this planner will generate the full decompression plan to help conduct the dive. Important: This tool should only be used as an assistance to plan the dive. On the actual dive, a technical diver should always have a minimum of 2 technical dive computers.

If you want more information, read the full guide to using this online decompression planner.

Features

Model/Decompression features:

Uses the Bühlmann ZHL-16 C/B models
Completely customisable conservatism profile using GF Low/GF High
Helium/Trimix supported

Planning & Risk Analysis:

Generates a main plan, a contingency (deeper + longer) plan, and a lost gas plan for each decompression gas available.
Automatically calculates the required gas amount for each plan, and gives the total amount required for each gas according to the rule of thirds.
Checks the final OTU, CNS-single, CNS-daily limits for each plan.

Customization:

Customizable environmental conditions (water density, altitude, pressure)
Control over the key parameters (ascent/descent rate, last stop, decompression ppO2, decompression END, duration of gas switch, etc...)

Making Decompression Visible:

Easy-to-understand decompression tables
Generates an interactive graph to visualize the Nitrogen/Helium saturation in the tissue after each stop.
Generates the dive profile, superimposed with the depth ceiling.

Useful links

Planning a decompression dive using a decompression planner

Understanding how the decompression planner was built