Roofing Calculators
Calculate roofing squares (100 sq ft), 3-tab & architectural shingle bundles, standing seam metal roof panels, pitch multipliers, underlayment rolls, gutters, and ridge ventilation.
Roofing Square Calculator – Calculate Roof Area in Squares
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Shingle Calculator – Shingle Bundles & Starter Strips
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Roofing Material Cost Calculator – Complete Replacement Cost
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Metal Roofing Calculator – Standing Seam Panel Estimator
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Roof Pitch & Angle Calculator – Pitch Ratio to Degrees
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Gutter Length Calculator – Seamless Gutters & Downspouts
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Roofing Underlayment Calculator – Felt Paper Roll Coverage
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Roof Valley Length Calculator – Valley Pitch & Flashing Length
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Roof Overhang Calculator – Eave Extension & Soffit Area
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Roof Snow Load Calculator – Ground Snow to Roof Pressure PSF
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Ridge Vent Calculator – Attic Net Free Vent Area & Feet Needed
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Roof Flashing Calculator – Step Flashing, Drip Edge & Valley Metal
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Skylight Sizing Calculator – Window Area to Room Ratio
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Ice & Water Shield Calculator – Eave & Valley Membrane Rolls
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Roofing Material & Pitch Estimating
Roofing replacement calculations require accounting for roof pitch multipliers (slope steepness), starter courses, ridge cap bundles, and material waste factors (10% to 15%).