CO₂ Breathing Emission Calculator
ppm
h
ppm
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Important:
This is a simplified indoor-air model. Real CO₂ levels depend on measured ventilation, occupancy changes, mixing, open doors/windows, and HVAC controls.
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Estimates indoor CO₂ concentration from people, activity, time, outdoor CO₂, room volume, and ventilation using a well-mixed room mass-balance model.
How to use this calculator
Enter or select: Room type, This room was, Initial indoor CO₂, Average room population, Average activity, Stay duration, Outdoor CO₂, Room length, Room width, Ceiling height, and additional current-source controls. Then calculate to see the primary result and supporting metrics.
Method and limitations
This is a simplified indoor-air model. Real CO₂ levels depend on measured ventilation, occupancy changes, mixing, open doors/windows, and HVAC controls.
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