Closing Capacity (CC) To Total Lung Capacity Calculator

Respiratory
1 minute

Total Lung Capacity (TLC) is the volume of air in the lungs at maximal inspiration. It is calculated by summation of the four primary lung volumes: inspiratory reserve volume (IRV), tidal volume (TV), expiratory reserve volume (ERV), residual volume (RV).

Inspiratory Reserve Volume
L
Tidal Volume
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Expiratory Reserve Volume
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Residual Volume
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Closing Volume
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    • TLC = IRV + TV + ERV + RV
    • CC = CV + RV
    • CC / TLC (%) = 100 * CC / TLC

    Where:

    TLC = Total lung capacity

    CC = Closing capacity

    IRV = Inspiratory Reserve Volume (Liters)

    TV = Tidal Volume (Liters)

    ERV = Expiratory Reserve Volume (Liters)

    RV = Residual Volume (Liters)

    CV = Closing Volume (Liters)