Scuba Calculators & Dive Tools

Whether you're diving air or Nitrox, planning cold water dives, or preparing for travel, these calculators can help you plan smarter and dive safer. Use our interactive tools to calculate MOD, estimate reserve gas, track your RMV, pack efficiently, and more. Built for recreational divers with real-world needs—no fluff, just reliable planning.

These calculators are designed to help you make safe, informed, and efficient dive plans. All tools use standard assumptions and are intended for educational use only—not as a substitute for formal training or real-world checks.

• MOD Calculator
• Minimum Reserve Gas
• RMV / SAC Rate
• Buoyancy Estimator
• Packing Weight Estimator

Calculating MOD, PO₂, EAD, and END When Diving Nitrox

Interactive Nitrox calculator that shows MOD, PO₂, EAD, and END based on your gas mix. Visual warnings highlight unsafe depths and oxygen exposure. Learn how Nitrox affects dive planning. We also have a deep dive on how to calculate MOD.

Minimum Reserve Gas Calculator

Plan the minimum gas required for you and your buddy to ascend safely from your planned depth.

RMV / SAC Rate Calculator

Calculate your gas consumption rate from dive log data to improve your planning accuracy.

Buoyancy Estimator

Estimate the ballast you’ll need based on exposure suit, tank type, and water type.

Packing Weight Estimator

Total your dive gear weight and decide what to carry on vs. check for flights.

These calculators are for planning and education purposes only. Always dive conservatively and verify your plan with a certified dive professional when needed.