Roofing Calculator

Estimate roof squares and shingle bundles.

Pitch 6 means 6/12. Area uses pitch factor √(1+(rise/12)²). Educational estimate only — verify with a contractor.

Roof squares
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    How to use

    1. Enter building footprint width and length.
    2. Set roof pitch as rise over 12.
    3. Add waste; see squares and ~3 bundles per square.
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