---
title: "MV-Plan"
weight: 1
description: "Decompression planner for technical diving: Buhlmann ZHL-16C algorithm with gradient factors, open circuit (OC) and rebreather (CCR) support."
category: "Diving"
type: "application"
source_hash: bae355724202
---

# MV-Plan

MV-Plan is a decompression planner for technical scuba diving. It computes your decompression stops with the Buhlmann ZHL-16C (and ZHL-16B) algorithm and gradient factors (GF), for open circuit (OC) diving as well as closed circuit rebreather (CCR) diving.

The application runs straight in your browser, on a computer as well as on a phone. It is also available as an installable app (Android and iOS) and as a desktop application. All your data (settings, mixes, plans) stays on your device: nothing is sent to a server.

> **Disclaimer:** MV-Plan is a planning aid. It does not replace training, experience or the diver's judgment. Always check your plan against other tools and carry backup tables.

> **Read this if you have used MV-Plan before:** the ascent is now computed the way Subsurface computes it, and most plans come out slightly shorter than before; a dive with no decompression obligation no longer shows a decompression stop but a named safety stop. A plan saved before that change no longer recomputes identically. See [Ascent calculation](/mvplan/calcul-de-la-remontee) and, for the previous change, [New pressure model](/mvplan/nouveau-modele-de-pression).

## Main features

- **Decompression calculation** with Buhlmann ZHL-16C / ZHL-16B and adjustable gradient factors (GF Low / GF High), an ascent computed the way Subsurface computes it and continuously compared against its engine.
- **Safety stop**, named and adjustable, on dives with no decompression obligation.
- **Open circuit and rebreather**: OC mixes, CCR diluents, fixed or dynamic setpoints.
- **Bailout simulation**: the open circuit way out if the rebreather fails.
- **Day of diving**: several dives chained on residual nitrogen, adjustable surface intervals, cumulative CNS and OTU over the series.
- **Gas mixes**: air, nitrox, trimix, with automatic MOD (maximum operating depth) and END (equivalent narcotic depth).
- **Gas consumption**: requirements per cylinder from your own consumption (RMV / SAC), with a warning when capacity falls short.
- **Profile chart**: the dive drawn out, saturation of the 16 tissue compartments, leading compartment.
- **Safety alerts**: narcosis (END), gas density (CO2), isobaric counterdiffusion on a gas switch (ICD).
- **Real environment**: altitude up to 4000 m and adjustable salinity (fresh, brackish, sea, Red Sea or a custom density from 9500 to 12500 g/l).
- **School mode**: several gradient factor settings compared side by side on the same profile.
- **Saved plans**: save, duplicate, import and export your plans.
- **PDF export**: a printable dive sheet, with or without the profile chart.
- **Multilingual**: French, English, German, Spanish, Italian, Polish.

## Requirements

- A modern web browser (Chrome, Firefox, Safari, Edge).
- No account and no permanent internet connection: the application works offline once loaded.
- For the mobile version: Android or iOS, through the download buttons inside the application.

## Where to start

- [Ascent calculation](/mvplan/calcul-de-la-remontee): what changed in the ascent and what it means for your saved plans.
- [New pressure model](/mvplan/nouveau-modele-de-pression): the previous change, about pressure.
- [First steps](/mvplan/premiers-pas): finding your way around the interface.
- [Settings](/mvplan/reglages): setting the algorithm, the rates, your own consumption.
- [Water type and salinity](/mvplan/eau-et-salinite): setting the salinity of the site and measuring its effect on the stops.
- [Gases](/mvplan/gaz): declaring your mixes and your cylinders.
- [Planning](/mvplan/planification): building a dive and running the calculation.
- [Day of diving](/mvplan/journee-de-plongee): chaining several dives, setting the surface intervals, following the totals.