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Roofing Squares and Material Estimator

Turn simple ground-level dimensions into a transparent planning estimate before discussing measured quantities with a roofing contractor.

Informational Guide Only

This guide is provided for educational and informational purposes only. LocalServicesMatcher is a lead generation and matching platform that connects consumers with independent service providers. We do not provide services directly, and the information here should not be considered professional advice. Service availability, pricing, methods, and results vary by provider. Always consult with licensed professionals for your specific situation.

Estimate roof area and roofing squares

Enter ground-level building dimensions and a uniform roof pitch. For additions, dormers, or sections with different pitches, calculate each rectangle separately.

Ground-level dimensions
Roof form and planning waste

Waste varies with valleys, hips, cuts, product layout, bundle coverage, and installer requirements. The selected percentage is a planning assumption, not an order recommendation.

Planning results

Enter the dimensions and select Calculate estimate.
Important: Do not climb onto a roof to obtain measurements. This calculator simplifies a roof to a uniform rectangular plan and pitch. A qualified roofer’s measurement, product layout, safety plan, and field conditions determine actual quantities.

How roofing squares work

Measure the plan

Start with a building footprint and include the overhang. Separate additions or roof sections should be calculated individually.

Apply the pitch factor

Pitch increases the sloped surface compared with the horizontal plan. Different pitches require separate calculations.

Verify ordering units

One roofing square is 100 square feet. Bundle coverage and waste depend on the exact product, layout, roof details, and installer.

Related Roofing Resources

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