Calculator

Roof Shingle Calculator

Estimate shingle bundles using roof area, pitch factor, and waste.

Use decimals when needed. This estimate updates live and is safe to tweak before you buy materials.

Minimum 100 sq ft. Use whole numbers for the clearest estimate.

Minimum 1. Commas or periods work for decimals.

Minimum 1. Use whole numbers for the clearest estimate.

Minimum 0. Use whole numbers for the clearest estimate.

Estimate updates automatically as you type.

Estimated shingles

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Buying guide

Roof Shingle Calculator FAQ

What is a roofing square?

A square equals 100 square feet of roof area.

Why include pitch factor?

Steeper roofs have more actual surface area than the footprint.