Calculate the required BTU for your room air conditioner. Factor in room size, insulation, sunlight, climate, and occupants. Get AC type recommendations instantly.
The BTU (British Thermal Unit) Calculator helps you determine the right air conditioner size for your room. It factors in room dimensions, insulation quality, sunlight exposure, local climate, number of occupants, and heat-generating appliances to calculate the precise cooling capacity needed. All calculations happen in your browser — no data is sent to any server.