Estimate how long your air purifier filter will last based on
your air purifier's speed, room PM2.5 concentration, and usage.
Note: This calculator does not take into account gases, VOCs,
formaldehyde, etc that are filtered by an Activated Carbon filter
and/or Formaldehyde Killer coating.
µg/m³
Enter the average PM2.5 concentration measured in the room after leaving the air purifier running for at least two to three hours.