Dive Toolbox

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.