Size an air purifier for your room.
Size an air purifier for your room.
CADR = Volume × ACH / 60
200 sq ft, 8 ft ceiling, 4 ACH → 107 CFM needed.
Enter values above and click Calculate. All computation happens locally in your browser — no data is sent to any server.
What is Room Air Purifier Size Calculator?
Size an air purifier for your room.
Formula used?
CADR = Volume × ACH / 60
Is it free?
Yes! All CalcNest AI tools are 100% free.
Is my data safe?
All calculations run locally. We never store or transmit your data.