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Roofing Calculator
Roofing squares and shingle bundles from footprint and pitch.
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Results
Roofing Squares
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Shingle Bundles
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Roof Area
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How to use the Roofing Calculator
Pitch multiplies the footprint — a 6/12 pitch adds ~25% area. One square = 100 sq ft; bundles ≈ 3 per square.
Frequently Asked Questions
100 square feet of roof area — the industry's unit for shingles, felt and labor.