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Free Roofing Calculator

Shingle squares needed for a roof.

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Inputs

Result

Roofing squares

13.44

With 10% waste14.78
Bundles (3 per square)44

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Short answer

Shingle squares needed for a roof.

What is the Roofing Calculator?

Shingle squares needed for a roof.

How does the Roofing Calculator work?

Enter the inputs above and read the result.

Formula

Squares = L · W · pitch / 100

Variables

    Explanation

    1 square = 100 ft². Pitch multiplier converts footprint to actual roof surface.

    Examples

    Applications

      Advantages

        Limitations

          Common mistakes

            Tips

              Related concepts

              The Roofing Calculator sits inside the Construction Calculators hub, in the structures & exteriors cluster. Framing, roofing, fencing and outdoor work. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.

              on-centre spacingpitchlinear feetspan

              Practical use cases and industry applications

              Understanding Roofing

              Shingle squares needed for a roof. Within construction calculators, roofing belongs to the structures & exteriors cluster, where it shares terminology and assumptions with closely related tools.

              Learning how roofing is calculated

              1 square = 100 ft². Pitch multiplier converts footprint to actual roof surface. Working through the variables one at a time — — makes the result reproducible by hand and easier to sanity-check.

              Using roofing to make a decision

              Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.

              How roofing compares with related measures

              on-centre spacing, pitch, linear feet, span all describe adjacent aspects of structures & exteriors. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.

              Frequently asked questions

              Related calculators

              More structures & exteriors tools

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