Indoor CO2 Ventilation Calculator

ASHRAE ventilation math is written for HVAC engineers. Enter your room size, how many people are in it, and how much fresh air gets in, and get the same answer in plain numbers. Nothing uploaded.

CO2 ppm ? ASHRAE 62.1 ? Air changes per hour ? Classrooms / offices / bedrooms

Result

Good — fresh air

Steady-state CO2

ppm

Room volume

m³

What this means

This room maintains good air quality at the entered occupancy and ventilation level.