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Altitude

Altitude Diving Adjustment

Adjusting depths for a dive above sea level.

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 altitude and depth
The height of the lake or dive site above sea level, in steps of 100 m (300 ft).
The deepest point of your planned dive. Recreational goes to 45 m (150 ft); deeper needs Technical.

I think this is an error

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