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Gas Planning (Dive)

Gas Planning - Gas Needed For A Dive

From your RMV, the gas a one-depth dive needs, with its ascent and safety stop.

Metric shows depths in metres and pressures in bar; Imperial in feet and atm. Your choice is kept across every formula for this visit.
Recreational limits mixes to 21–40% oxygen (nitrox). Technical allows any oxygen percentage up to 100% and trimix (helium). Granular lets you type exact values, to a decimal place. Your choice is kept across every formula for this visit.
Fresh water is less dense than salt water, so the same pressure is reached a little deeper (10.3 m per bar, against 10 m in salt water).
Your dive and cylinder
Your breathing rate at the surface, as a volume: from the RMV screen, or your computer. It is true for any cylinder.
The cylinder you will dive. Its water capacity turns litres into bar.
The depth of the dive. One depth: for a dive with several levels, use the deepest.
From leaving the surface to starting the ascent, as dive tables count it.
How fast you ascend. Agencies teach 9 or 10 m (30 or 33 ft) a minute; some allow up to 18 or 20 (60 or 66).
The pressure in the cylinder as you start the dive.

I think this is an error

This sends the calculation on this screen, exactly as it is now.