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CO₂ Breathing Emission Calculator
Calculate human respiratory carbon dioxide exhalation and indoor emissions
Physiological Formula: An average resting adult exhales approximately $0.038\text{ to }0.045\text{ kg}$ of $\text{CO}_2$ per hour ($\sim 0.9\text{ kg}$ to $1.0\text{ kg}$ per day). Enter your group size and duration below.
Respiration Parameters Input
Calculation Results
⚠️ Human respiratory $\text{CO}_2$ is part of the natural short-term biological carbon cycle and does not add net fossil carbon to the atmosphere!