Calculators for divers
Everything is calculated on your device. No connection needed, so it works on the boat. No sign-up, no charge.
- Wetsuit thickness by water temperatureThickness from water temperature — or pick a dive site and month and use real measurements
- Air consumption (SAC / RMV) calculatorYour consumption rate from pressure, depth and time — the basis for planning gas
- Nitrox MOD / EAD calculatorMaximum operating depth, equivalent air depth and best mix from your O2 fraction
- Dive weight calculatorA starting point for your weight check, from body weight, suit and tank
- Dive unit converterbar/psi, m/ft, L/cuft, C/F — for reading overseas tanks and gear
- Breath-hold trainingDry-land CO2 / O2 tables. Read the safety notice first
Archive of measured data
The measurements collected since 2006 stay readable. These are recorded values, not forecasts.
- Best season at a glanceMonthly average visibility for every site
- On this dayVisibility recorded on this date in past years
- Best of this monthSites that averaged best this month
- Data sourcesThe dive-shop logs the records came from
The daily visibility forecast itself has ended.
These tools are for education and planning support. They do not replace dive training, a dive computer, or the judgement of the guide or instructor on site.