Gas comparison
Compare narcotic-depth assumptions without making a gas plan
Compare narcotic load using a conservative default that treats oxygen as narcotic. This is education, not trimix planning.
Planning aid
Equivalent narcotic depth comparison
Default mode treats oxygen as narcotic for a conservative educational comparison.
m
%
%
Equivalent narcotic depth
30.0 m
Narcotic partial pressure
4.00 ATA
Gas fractions
O2 21% / He 0% / N2 79%
Planning boundary: This high-risk topic is educational only. It is not a dive computer, decompression planner, medical clearance, emergency instruction, or technical-diving training.
Formula and source notes
For oxygen and table context, review DAN oxygen toxicity guidance and NOAA Diving Program resources.