LifeTally · Breathing
How much air moves through your lungs in a day?
Compare sleep, quiet time, walking and hard exercise — including breaths and exhaled CO₂.
No account. Your values stay in this browser.01 · Orientation estimate
Average values are filled in. Change only the hours that differ from your day.
StateHours per dayAir breathed per day
Sleep2.4 m³
Quiet / seated6.7 m³
Walking / daily movement2.3 m³
Running / hard exercise1.8 m³
Scientific assumptions (optional)MET, breathing rate and airflow are already estimated. Open only if you know your own measurements.
Your entered day: 24 hExactly 24 hours
02 · How it is estimated
Air volume is minute ventilation × time. Exhaled CO₂ is modelled as 4% of exhaled air; mass uses about 1.84 g per litre of CO₂.
Healthy people vary widely with size, fitness, altitude and intensity. This is educational, not a lung test.
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