Dive Toolbox
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About this app
DiveToolbox — Professional dive planning and gas calculation tools, built by divers, for divers.
Whether you're a recreational diver planning your next nitrox dive or a technical diver preparing a multi-gas decompression profile, DiveToolbox gives you the precision tools you need.
8 DIVING TOOLS
▸ Decompression Dive Planner — Bühlmann ZH-L16C algorithm with configurable gradient factors, multi-gas planning, automatic deco gas switching, CNS/OTU tracking, and emergency gas analysis.
▸ MOD / EAD / END Calculator — Maximum Operating Depth, Equivalent Air Depth, and Equivalent Narcotic Depth for nitrox and trimix. Includes Best Mix finder.
▸ Gas Blending Calculator — Nitrox and trimix blending with partial pressure method. Step-by-step fill instructions.
▸ Unit Conversions — Depth, pressure, temperature, volume, and weight between metric and imperial.
▸ Gradient Factors Calculator — No-decompression limits with configurable gradient factors. 6 conservatism presets.
▸ Successive Dives Planner — Plan dive sequences with surface intervals, residual nitrogen, and adjusted NDLs.
▸ SAC / RMV Calculator — Calculate your Surface Air Consumption rate from any dive.
▸ Rock Bottom Calculator — Minimum gas reserve for emergency ascent with buddy air sharing.
KEY FEATURES
• Bühlmann ZH-L16C decompression algorithm
• Multi-gas planning: Air, Nitrox, Trimix, Heliox
• Configurable gradient factors with 6 presets (30/70 to 50/85)
• Real-time calculations
• Save and share dive plans
• Metric and imperial units
• 7 languages (EN, FR, DE, IT, ES, PL, RU)
• Dark and light themes
FREE — No account required:
• Unit Conversions
• MOD / EAD / END Calculator
• Gradient Factors Calculator
PREMIUM — With subscription:
• Decompression Dive Planner
• Gas Blending Calculator
• SAC / RMV Calculator
• Rock Bottom Calculator
• Successive Dives Planner
• Unlimited saved dive plans
FOR DIVE PROFESSIONALS
Instructor plans include student access management. Dive center plans offer team management with bulk access codes.
Whether you're a recreational diver planning your next nitrox dive or a technical diver preparing a multi-gas decompression profile, DiveToolbox gives you the precision tools you need.
8 DIVING TOOLS
▸ Decompression Dive Planner — Bühlmann ZH-L16C algorithm with configurable gradient factors, multi-gas planning, automatic deco gas switching, CNS/OTU tracking, and emergency gas analysis.
▸ MOD / EAD / END Calculator — Maximum Operating Depth, Equivalent Air Depth, and Equivalent Narcotic Depth for nitrox and trimix. Includes Best Mix finder.
▸ Gas Blending Calculator — Nitrox and trimix blending with partial pressure method. Step-by-step fill instructions.
▸ Unit Conversions — Depth, pressure, temperature, volume, and weight between metric and imperial.
▸ Gradient Factors Calculator — No-decompression limits with configurable gradient factors. 6 conservatism presets.
▸ Successive Dives Planner — Plan dive sequences with surface intervals, residual nitrogen, and adjusted NDLs.
▸ SAC / RMV Calculator — Calculate your Surface Air Consumption rate from any dive.
▸ Rock Bottom Calculator — Minimum gas reserve for emergency ascent with buddy air sharing.
KEY FEATURES
• Bühlmann ZH-L16C decompression algorithm
• Multi-gas planning: Air, Nitrox, Trimix, Heliox
• Configurable gradient factors with 6 presets (30/70 to 50/85)
• Real-time calculations
• Save and share dive plans
• Metric and imperial units
• 7 languages (EN, FR, DE, IT, ES, PL, RU)
• Dark and light themes
FREE — No account required:
• Unit Conversions
• MOD / EAD / END Calculator
• Gradient Factors Calculator
PREMIUM — With subscription:
• Decompression Dive Planner
• Gas Blending Calculator
• SAC / RMV Calculator
• Rock Bottom Calculator
• Successive Dives Planner
• Unlimited saved dive plans
FOR DIVE PROFESSIONALS
Instructor plans include student access management. Dive center plans offer team management with bulk access codes.
Updated on
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No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info
Data is encrypted in transit
You can request that data be deleted
What’s new
• NEW: Closed Circuit Rebreather (CCR) dive planning with bailout analysis
• Bug fixes and performance improvements
• Bug fixes and performance improvements
App support
About the developer
ONOSIA
contact@divetoolbox.com
6 B BD BERTHELOT
34000 MONTPELLIER
France
+33 7 82 37 36 74