Free Tool
BTU Calculator
Enter your room dimensions to find the right aircon size. Singapore tropical climate (25% cooling uplift) applied automatically.
Room area: 16.0 m² · Singapore tropical climate adjustment applied
How BTU Sizing Works
1
Measure Your Room
Length × Width in metres gives the room area (m²).
2
Apply Adjustments
Sun exposure, ceiling height, room type, and occupants affect the load.
3
Get Your Recommendation
The calculator returns BTU and the recommended tonnage for Singapore's climate.
Singapore Note
The standard formula uses 500 BTU/m². In Singapore's tropical climate, a 25% uplift is applied (500 × 1.25 = 625 BTU/m²) because temperatures stay high year-round and humidity increases the cooling load significantly.
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