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Belemnite Divers

Dive Planning Tools

Welcome to Belemnite Diving

Professional dive planning calculators for recreational and technical diving.

Important Safety Notice

These calculators are planning tools only. Always:

  • Verify calculations with multiple sources
  • Follow your training and certification limits
  • Use proper dive computers and backup instruments
  • Never dive beyond your training level
  • Analyze all breathing gases before use

Recreational Diving

Calculate dive times, gas consumption, and maximum operating depths for recreational diving.

Open Calculator

Technical Diving

Advanced calculations for trimix, equivalent narcotic depth, and gas density analysis.

OC Tech Calculator

CCR Diving

Closed-circuit rebreather calculations including CNS/OTU tracking and loop gas analysis.

CCR Calculator

Gas Blending

Calculate trimix and nitrox blending procedures for optimal gas mixes.

Blending Tools