Web Programming I · JavaScript

SAC Rate Calculator

Figure out your Surface Air Consumption rate from a dive.

Surface Air Consumption

How it works

Enter how much gas you used (psi), your tank size (cubic feet), your dive time (minutes), and your average depth (feet). The calculator converts your air use to a depth-normalized SAC rate in psi per minute.

Gas used (psi) Tank size (cu ft) Dive time (min) Average depth (ft)

Water type

Salt Fresh

Dive conditions (optional — check all that applied)

Cold water Strong current Low visibility Night dive Heavy exertion Task loading / stress New / unfamiliar gear

Your Dive Log

Every dive you calculate is saved to this browser with local storage, so your log is still here when you close the page and come back later.