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Welcome to DiveToolbox

DiveToolbox is a professional dive planning application built for recreational and technical divers who take safety seriously. It provides decompression dive planning, gas calculations, and blending tools — all accessible from any device.

What is DiveToolbox?​

DiveToolbox is a comprehensive suite of dive planning tools powered by the Bühlmann ZH-L16C decompression algorithm, trusted by technical divers worldwide. Whether you're planning a simple recreational dive or a complex multi-gas decompression dive, DiveToolbox has you covered.

Key features​

  • Dive Planner — Plan single-level and multi-level decompression dives with customizable gradient factors, multiple gas mixes, and detailed ascent profiles. Supports both Open Circuit (OC) and Closed Circuit Rebreather (CCR) diving
  • Gas Calculators — Calculate MOD, EAD, END, and Best Mix instantly for nitrox and trimix diving
  • Gas Blending — Precise partial pressure calculations with step-by-step blending instructions for nitrox and trimix
  • SAC / RMV Calculator — Track and calculate your surface air consumption
  • Rock Bottom — Calculate minimum gas reserves for emergency ascent scenarios
  • Successive Dives — Plan repetitive dives with residual nitrogen tracking
  • Gradient Factors — Understand how GF settings affect your no-deco limits
  • Weather — Real-time marine conditions, divability score, tide charts, and favorite dive spots
  • Unit Conversions — Convert between metric and imperial units for depth, pressure, temperature, volume, weight, and speed

Who is it for?​

Recreational divers​

  • Quick no-decompression limit (NDL) calculations
  • Nitrox best mix finder
  • Simple unit conversions
  • Easy-to-understand results

Technical divers​

  • Multi-gas decompression planning (OC and CCR)
  • Customizable gradient factors (GF Low / GF High)
  • Trimix blending calculations
  • CCR support with setpoints, diluent configuration, and full bailout planning
  • Detailed ascent profiles with runtime tables

Dive professionals​

Instructors and divemasters can use DiveToolbox to plan training dives and share plans with their students.

Works everywhere​

DiveToolbox is available as a web application, a mobile app for iOS and Android, and a desktop app for macOS, Windows, and Linux. Your data syncs across all your devices. The app is available in 7 languages: English, French, German, Spanish, Italian, Polish, and Russian.

Documentation overview​

This documentation will help you get the most out of DiveToolbox:

  • Getting Started — Create your account, explore the dashboard, and configure your settings
  • Dive Planner — Learn how to plan dives, configure tanks, read results, and share your plans
  • Calculators — Detailed guides for each calculator and tool
  • Account — Manage your profile, billing, and referral program
  • Mobile App — Install and use the mobile app
  • Desktop App — Install the desktop app
Free tools

The Conversions, MOD/EAD/END, Gradient Factors, Rock Bottom, and Weather tools are completely free and unlimited. All other tools (Dive Planner, Gas Blending, SAC Calculator, Successive Dives) are also free to try with limited quotas. Subscribe to Premium for unlimited access.