Oxygen Duration Calculator
Calculate how long your supplemental oxygen supply will last based on altitude, flow type, and number of occupants. Includes FAR 91.211 requirements.
Inputs
ft³
Portable: 22 ft³, Standard: 48 ft³, Large: 77 ft³
PSI
ft
Results
Oxygen Duration
906 min
Duration (hours)
15.1 hr
FAR 91.211 Requirement
FAR 91.211: All occupants must use supplemental O₂ above 14,000 ft.
Total Flow Rate1.5 LPM
Available Oxygen1,359 L
Tank Level100%
Oxygen Duration
906 min
Duration (hours)
15.1 hr
FAR 91.211 Requirement
FAR 91.211: All occupants must use supplemental O₂ above 14,000 ft.
How to Use This Calculator
- Enter your oxygen bottle size and current pressure reading.
- Enter your planned altitude and number of people using oxygen.
- Select continuous flow (cannula) or demand (conserving) regulator type.
- Ensure duration exceeds your planned time at altitude plus reserve.
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