← Dive Tools

Gas Blender

Plan or analyze gas blends for scuba cylinders using partial-pressure math. Supports nitrox and trimix.

Pressure unit:

What do you want to calculate?

Starting tank (residual)

psi
%
%

Target mix (desired final)

psi
%
%

Top-off gas

%
%

Defaults to air (21% O2, 0% He). Change if using a different top-off blend.

Fill Instructions

Safety reminder: These calculations are for planning only. Always verify your final mix with a calibrated analyzer before every dive. Never exceed your cylinder's service pressure or your training limits. Oxygen handling requires O2-clean equipment and training; follow your blender's procedures.