Roof Area Calculator

Estimate your total roof area in m², roofing squares, and the number of tile bundles needed — instantly. Covers gable, hip, and flat roofs with standard Malaysian pitches.

Roof Area Calculator

Estimate your total roof area for repair, replacement, or material ordering. Works for gable, hip, and flat roofs.

Calculation MethodFrom House Footprint (Length × Width)From Roof Dimensions

Building Length (m)

Building Width (m)

Roof Pitch(Steeper roofs have more surface area)Flat / Low-slope (0–1/12)Low (2/12)Low-medium (3/12)Medium (4/12)Medium (5/12)Medium-steep (6/12) — Common in MalaysiaSteep (7/12)Steep (8/12)Very steep (10/12)Very steep (12/12)

Waste / Overlap Factor10% — Simple roof, few cuts15% — Standard (recommended)20% — Complex roof, many valleys25% — Very complex, many dormers

Calculate

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