Multiply your room area (sq ft) by a base cooling load per sq ft, adjust for your climate zone, then round up to the nearest available tonnage. The calculator below does this using the real formula, factoring in your room's sunlight, floor level, and ceiling height too.
📐 Calculated estimate
Based on real BEE-certified data — see the exact numbers below.
The core figure is area × 96 BTU/hr per sq ft, then scaled by your climate zone (hotter zones need more cooling per sq ft) and 12,000 BTU/hr per ton. That base number is then adjusted up or down for real factors: high ceilings, strong sun exposure, top-floor heat, and more than 2 occupants all increase the requirement; good insulation or low sun exposure reduce it.
Calculate your exact tonnage
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✅ Daikin/BEE published spec
📐 Calculated from verified data