Roofing Material Calculator
Construction & Home ImprovementCalculate the number of roofing squares and shingle bundles needed for your roof.
Roofing Squares Needed
Roofing squares needed (1 square = 100 sq ft), including waste factor.
Shingle Bundles Needed
66.0
Total shingle bundles needed for this roof.
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Construction & Home Improvement calculators
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Construction & Home Improvement calculators
Frequently Asked Questions
What is a roofing "square"?
A roofing square equals 100 square feet of roof area — it's the standard unit roofers use for estimating materials and labor, regardless of the actual shingle product being installed.
Why include a waste factor?
Cutting shingles around edges, valleys, ridges, and chimneys creates waste — a 10-15% waste factor is typical for standard roofs, with more complex roof shapes (many hips, valleys, dormers) needing a higher allowance.
Why do most shingles come 3 bundles per square?
Standard 3-tab and architectural shingles are most commonly packaged so that 3 bundles cover one roofing square, though this can vary by manufacturer and shingle type — check your specific product's coverage rating.
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