Roofing Shingles Calculator
Estimate roofing squares, shingle bundles and drip edge from your roof footprint and pitch.
Enter your values and press Calculate.
How to use the Roofing Shingles calculator
This assumes a simple gable or hip roof where every plane has the same pitch. Add extra for valleys, dormers and ridge caps.
Formula
Roof area = footprint × pitch multiplier; one roofing square = 100 sq ft; standard architectural shingles come 3 bundles per square.
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