Oxygen tank duration calculator

How many minutes an oxygen cylinder lasts at a given flow: the gauge pressure above a safe residual, times the cylinder's factor, divided by the flow.

Training aid

Training aid only. Verify every value against your local protocol and medical direction before acting on it.

Practice this on a patient. The 60-second call is free, with no account.Start a free call

An estimate, rounded down

The factors are nominal for each cylinder size, and gauges are not precise near empty. Plan on less time than this, not more, and check the gauge again during a long transport.

Result

Pick a cylinder size, then enter the gauge pressure and the flow.

Airway Adjuncts: OPA and NPA Sizing and Insertion
What oropharyngeal and nasopharyngeal airways do, when each is used, how to measure an OPA and size an NPA, insertion technique, cautions, and when an adjunct is not enough.
Asthma vs COPD: Differences That Matter in the Field
How asthma and COPD differ in cause, reversibility and baseline, why the oxygen target changes for a COPD patient, the signs of a life-threatening attack, and where CPAP fits.
DOPE Mnemonic: Troubleshooting a Patient on an Advanced Airway
DOPE stands for displacement, obstruction, pneumothorax and equipment failure: what to check, and how, when an intubated or advanced-airway patient suddenly gets worse.
Lung Sounds: Wheezes, Crackles, Rhonchi and Stridor for EMS
How to listen to breath sounds in the field, what normal lung sounds are, and a chart of wheezes, crackles, rhonchi, stridor, friction rubs and absent sounds with their common causes.
Oxygen Therapy and Hyperoxia: Target Saturations, the Harms of Too Much, and When High Flow Is Right
Why oxygen is a drug, what hyperoxia does, the published saturation targets, CO2 retention in COPD, and the cases where high-concentration oxygen is still the treatment.

Other clinical tools

Knowing the number is not the same as running the call.

60-second call

One patient. Four vitals. Your priority actions. Every case is written at Paramedic (ALS) scope.

A short prehospital call with four vitals, from a real-life scenario a paramedic wrote. Type your priority actions and why, and get a debrief graded against a paramedic's rubric. Cases are written and graded at US Paramedic (ALS) scope.

Full scenarios

Run the whole call, dispatch to handoff.

Every one of the 207 calls in the library is written by a paramedic and runs at EMT or Paramedic scope. You work the call in your own words, and the debrief shows you what you missed and why it mattered.

Start 7-day trial Browse the scenarios

Result

Guides that use this tool

Other clinical tools

Run the whole call, dispatch to handoff.