Free roofing tool

Roofing squares calculator

Convert your roof area into roofing squares — the unit every roofer quotes in.

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A roofing square is 100 square feet of roof. This calculator converts your roof area into squares (and shingle bundles) so you can read a quote like a pro.

Roofing squares
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Add waste for hips, valleys, and starter/ridge material.

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Square feet to squares

Divide your roof area by 100 to get squares, then add a waste factor. Roofers quote in squares because materials, labor, and pricing all scale by the square. Learn more in what is a roofing square and cost per square.

Cost ranges reflect 2026 U.S. installed prices (BLS producer/labor data, Remodeling Cost vs. Value, and manufacturer pricing). Your real price depends on your roof, region, and pro — see the full cost guide.

FAQ

Roofing Squares Calculator questions

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One roofing square equals 100 square feet of roof surface. A 2,000 sq ft roof is 20 squares before waste.
Divide your roof area by 100. A 2,400 sq ft roof is 24 squares. Add 10–20% waste for the material order.
It keeps quotes simple — materials, labor, and pricing all scale per square. A "$450 per square" job on 24 squares is about $10,800 before extras.
Most shingles come 3 bundles per square. So a 24-square roof needs about 72 bundles plus waste.

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