Roofing
Roofing Calculators
Roof area, shingles, underlayment, and gutter sizing. Based on NRCA and SMACNA standards.
Made for roofers
Five calculators for the roof
From estimating material quantities to sizing gutters, these tools cover the math roofers reach for every job.
Roof Area Calculator
Calculate total sloped roof area from footprint and pitch. Outputs square footage and squares.
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Shingle Estimator
Estimate bundles and squares needed from roof area with configurable waste factor.
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Roof Pitch Calculator
sharedCalculate pitch ratio, angle, pitch factor, and rafter length from rise and run.
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Underlayment Calculator
Calculate rolls of underlayment needed based on roof area and overlap percentage.
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Gutter Sizing
Get recommended gutter size and downspout count for your roof drainage area.
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Ready to simplify your roofing business?
Estimates, invoices, scheduling, and payments in one place. Free to start.