BTU Calculator - HVAC Cooling & Heating Calculator | D2Tools.com

Free BTU calculator to determine air conditioning and heating requirements for any room. Calculate BTU needs based on room size, insulation, sun exposure, and occupancy.

Room Details

Room Area (m²)

Ceiling Height (m)

Insulation Quality

Sun Exposure

Number of Occupants

Appliance Heat (Watts)

Enter room details and click Calculate to see BTU requirements