Construction

Air Conditioner BTU Calculator

Find the cooling capacity in BTU/h for a room.

Calculated Output

Cooling needed (BTU/h) 8,000

AC size (tons) 0.6667

Formula: BTU = area × BTU/ft²

Step-by-Step Breakdown

1. Values used:

2. Room area = 400

3. BTU per ft² = 20

5. Cooling needed = Room area x BTU per ft² = 400 x 20 = 8,000BTU/h

6. AC size = 0.6667tons

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The math behind it

BTU/h = area × ~20 BTU/ft²; 1 ton = 12,000 BTU/h.

400 ft² → 8,000 BTU.

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