Closing Capacity (CC) – Alveoli Collapse Volume Calculator
Closing Capacity (CC) is a measure in respiratory medicine that tells us when small airways in the lungs start to collapse during breathing out. It helps to understand how well the lungs are working.
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CC is calculated as the sum of the closing volume (CV) and residual volume (RV – the amount of air left in the lungs at the end of a maximal expiration).
Once you have the required values (usually measured at a lung function test), enter them into the online calculator.
\text{CC} = \text{CV} + \text{RV}Where,
- CC = Closing capacity
- RV=Residual Volume (Liters)
- CV= Closing Volume (Liters