Air exchange
Calculate Air exchange instantly with the exact formula and a worked example. Free online calculator — no signup.
Air exchange
Room volumem³
Air changes per hour (ACH)
Air exchange
150m³/h
Volume
50 m³
ACH
3/h
m³/h
150
CFM
88,29
More about: Air exchange
What it calculates
The “Air exchange” calculator computes Air exchange in m³/h from 2 parameters: room volume (m³), air changes per hour (ach).
A standard physics formula used in educational and engineering tasks.
Example calculation
With parameters Room volume = 50 m³, Air changes per hour (ACH) = 3 the result is 150 m³/h (Q = V · ACH).
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.