Ventilation Calculator
Calculate the perfect airflow for your room ventilation needs
Room Dimensions
Enter a positive number.
Enter a positive number.
Enter a positive number.
Ventilation Calculation
Selecting a preset fills a recommended ACH (you can still edit it).
Leave empty if you know your fan’s flow rate.
Leave empty if you want to calculate required flow rate.
Optional Loss / Safety Model
Adds a fixed buffer to the calculated requirement.