Room Ventilation Calculator

Calculate the ventilation your room needs to maintain healthy CO2 levels. Based on ASHRAE 62.1 standards, this tool shows required air changes per hour, CFM rates, and how quickly CO2 levels will drop with proper ventilation.

Room Details

Length (feet)

Width (feet)

Ceiling Height (feet)

Number of Occupants

Activity Level

Sitting, typing, reading

Current CO2 Level (PPM) - Optional

If you have a CO2 monitor, enter your current reading. Otherwise, we'll use 1000 ppm as a starting point.

Monitor Your Room's CO2 Levels

A CO2 monitor helps you verify your ventilation is working and alerts you when levels get too high.

View Top CO2 Monitors on Amazon →

As an Amazon Associate, we earn from qualifying purchases.