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BTU calculator for a room

Enter the room area in m² to get an approximate BTU requirement.

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A 20 m² room needs about 6,000 BTU/h as a rough estimate; adjust for sun exposure and ceiling height.

Example

Estimate the BTUs needed to cool a room from its area in your browser. Values stay on your device.

A 20 m² room needs about 6,000 BTU/h as a rough estimate; adjust for sun exposure and ceiling height.

Processed locally in your browser.

Methodology

Uses a rough rule of thumb (about 300–350 BTU/h per m²). This is an approximation, not a professional load calculation.

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