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BTU Calculator
Get an initial air-conditioner capacity estimate based on area, occupancy, equipment, and sunlight. Your data is processed in your browser.
How to use
- Enter room area in square meters.
- Enter people and heat-producing devices.
- Choose sun exposure and calculate.
How it works
The base is 600 BTU/h per m² for normal sun or 800 for high sun, plus 600 for each extra person and device.
Notes and limitations
- This is a simplified estimate, not an HVAC design.
- Insulation, windows, climate, and actual heat load are not measured.
Frequently asked questions
Should I buy a unit from this result alone?
Use it as an initial reference and consult a qualified professional.