Room Volume for HVAC Calculator
L × W × H = ft³. Used for air-change calculations and AC/heating sizing.
Result
Room volume
1,512 ft³
42.8 m³.
- Volume1,512 ft³
- m³42.82
- Air changes/hr (ACH=4)101 CFM
- BTU/hr cooling (~25/ft²)4,200
Step-by-step
- V = 14 × 12 × 9 = 1,512 ft³.
How to use this calculator
- Enter room dimensions.
- Read volume + matching CFM and BTU estimates.
About this calculator
Room volume is needed for HVAC sizing, ventilation fan selection, and dehumidifier sizing. Standard residential ACH (air changes per hour) targets: 4-6 for bedrooms, 6-10 for kitchens, 8-15 for bathrooms.
Frequently asked
Air changes per hour. ACH × volume / 60 = CFM (cubic feet per minute) needed.
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