Scuba Diving Formulas
The same dozen calculations, done over and over, usually on a phone calculator with the constants half-remembered. This puts them in one place and shows the working, so you can check the answer rather than trust it.
What it will do
- Partial pressures, best mix, equivalent narcotic depth and maximum operating depth.
- Gas blending — top-up and partial-pressure fills, with what you actually have in the cylinder now.
- SAC and RMV from a real dive, and gas planning from a known SAC.
- Cylinder contents, buoyancy and weighting arithmetic.
- Metric and imperial throughout, chosen once and remembered.
- The formula and the substituted values shown beside every result.
A calculator, not a dive plan. It does arithmetic you have
chosen to do, with inputs you have supplied. It is not a decompression
planner, it does not replace training, and it will say so plainly wherever
a result could be mistaken for a plan.
Where it is up to
- On your phone
- DiveCalc — the name a home screen has room for
- Web application
- Not started. Follows Air Compressor Logger.
- iOS & iPadOS
- Planned. One universal app covering both.
- Android
- Planned.
- Sign in
- Apple, Google or Microsoft — needed to keep your saved gases and preferences across devices.
- Price
- Not decided. Not for sale.
A calculation we have missed?
Everyone has one they do constantly and nobody else seems to include. That is exactly the sort of thing worth telling us now.