Roofing Calculators
Free online roofing calculators for shingles, pitch multiplier, bundles, and materials. Estimate exact quantities for your roofing project with industry formulas shown.
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Shingle Calculator
Calculate roofing squares and shingle bundles needed. Accounts for roof pitch, waste factor, and estimates material cost.
Pitch Multiplier Calculator
Find the roof pitch multiplier to convert flat footprint area to actual roof surface area. Essential for accurate material estimates.
Bundle Calculator
Convert roofing squares to bundles. Standard shingles are 3 bundles per square. Specialty shingles may require 4-5 bundles.
Roofing Material Calculator
Complete roofing material list: shingles, underlayment, drip edge, ridge caps, starter strips, nails, and ice & water shield.