Free Tools for Divers

Dive Planning Tools & Calculators

Quick, accurate calculators to help you plan safer dives, pack the right gear, and avoid common mistakes. Each tool includes a detailed explanation so you understand the "why" behind every number.

Available Tools

Popular

Dive Planning

Scuba Diving Weight Calculator

Get a personalised lead weight recommendation based on your wetsuit, water type, tank material, body type, and experience level — with a full explanation of every factor.

Open Tool

Coming Soon

Flying After Diving Calculator

Know when it's safe to fly after your last dive based on your dive profile.

Gas Consumption Calculator

Estimate air usage, SAC rate, and turn pressure for any dive plan.

Wetsuit Thickness Guide

Find the right exposure protection for any water temperature and dive type.

No-Decompression Limit Calculator

Calculate your max bottom time before deco obligations kick in.

Surface Interval Calculator

Determine minimum surface intervals between repetitive dives.

Dive Trip Budget Calculator

Estimate the full cost of a dive trip including gear, boats, and accommodation.