Clean Air Calculator

Please select the infectious agent of your interest from the pull-down menu and enter the following values: 1) Tolerable infection risk percentage (greater than 0% and up to 5%, excluding 0%.), 2) Number of people infected, 3) Number of people not infected, 4) Average body weight (in kilograms) of people in the room, 5) Size of the room (in cubic meters), and 6) Duration of time spent in the room (in minutes). The realistic minimum volume of the room is calculated with a ceiling height of 2.5 meters.


In this example, the red-coloured person is potentially infected with the influenza virus and coughing and sneezing, and the green-coloured person is not infected but vulnerable. When green-coloured individuals specify their acceptable risk of influenza virus infection, the app tailors advice on ventilation strategies and suggests appropriate air change rates, contributing to a safer indoor air environment.