Roofing calculator

Roof Shingle Calculator

Estimate roof squares and shingle bundles from basic roof dimensions, pitch factor, and waste percentage.

Short answer

This roof shingle calculator gives a rough material estimate from roof dimensions, pitch, and waste factor. Homeowners should use it as a planning estimate, while roofing contractors should use dedicated estimating software for proposals, measurements, and job tracking.

Building length (ft)Building width (ft)Roof pitch factorWaste factor (%)

Estimated roof material need

14.8 squares

Roof area before waste: 1,344 sq ft
Roof area with waste: 1,478 sq ft
Estimated bundles: 45 bundles

Are You a Homeowner or a Contractor?

Homeowner

Use this as a rough planning number before asking licensed roofers for a quote.

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Roofing Contractor

Compare roofing CRM and estimating tools for quotes, follow-up, and job tracking.

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