OVM Dive Planner
Free Decompression Dive Planner for Technical Diving
OVM Dive Planner is a free online decompression calculator built for technical divers. Plan open-circuit and CCR dives with the Buhlmann ZH-L16C algorithm, gradient factors, trimix gases, and multi-level profiles in one workflow.
Use the interactive dive profile editor to build your plan, then calculate decompression stops, runtime, gas usage, and oxygen exposure values such as CNS and OTU.
Circuit Type
Dive Plan
Click on the chart to add waypoints. Drag points to adjust. Right-click to remove.
Dive levels::
Air
Settings
Decompression Mixes
Add gas switches for decompression. Specify the depth at which each gas is used.
Repetitive Dive
Dive 2 Profile
Click on the chart to add waypoints. Drag points to adjust. Right-click to remove.
Dive 2 levels:
Dive 2 Bottom Mix
Air
Dive 2 Deco Mixes
Add deco gas switches for Dive 2. Leave empty to use Dive 1 deco mixes.
Dive Planner FAQ
What decompression model does this planner use?
The planner uses Buhlmann ZH-L16C with configurable GF Low and GF High values.
Can I plan open-circuit and CCR dives?
Yes. You can switch between open-circuit and closed-circuit rebreather planning modes.
Does it support trimix and deco gas switches?
Yes. You can configure trimix bottom gases, add multiple deco gases, and set switch depths.