2026 BTU Calculator: Find the Perfect AC Size for Your Room

BTU Calculator: Precision AC Sizing

Accurately determine the cooling capacity needed for any space based on room dimensions, sunlight exposure, and occupancy.

BTU Calculator

Precision AC Sizing Tool for 2026 Fiscal Year

Room Length (ft)

Room Width (ft)

Sunlight ExposureNumber of Occupants

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Disclaimer: Results are estimates based on standard US residential guidelines. We do not store any personal information. Calculations are performed locally in your browser. Please consult a licensed HVAC professional before purchasing cooling equipment.