Oxygen Cylinder Remaining Quantity Calculation

Calculation Formula

When the pressure unit is MPa

• Remaining oxygen (L) = Cylinder capacity (L) x Pressure x 10


• Usable time (minutes) = Remaining oxygen (L) x Safety factor / Oxygen flow rate per minute (L)

If the pressure unit is kgf/cm ², then

• Remaining oxygen (L) = Cylinder capacity (L) x Pressure


• Usable time (minutes) = Remaining oxygen (L) x Safety factor / Oxygen flow rate per minute (L)

The maximum filling pressure for cylinders appears to be 14.7 MPa in most cases.

Fractional values for available time and remaining oxygen are rounded down to whole numbers.

Text color for calculation results

• Green: Available time exceeds 60 minutes


• Yellow: Remaining usage time is between 30 and 60 minutes


• Red: Remaining usage time is less than 30 minutes

*This site assumes no responsibility whatsoever for calculation results or other information. We do not provide individual consultations.