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Roofing Calculators

Calculate roof surface, pitch, roof repair materials, decking sheets, skylight openings and gutter quantities for exterior projects.

Available roofing calculators

8 calculators for this project type.

Roofing & ExteriorRoof Replacement Cost CalculatorEstimate roof surface, material order quantities and replacement costs from measurements and itemized rates.

Roofing & ExteriorGutter Cost CalculatorMeasure gutter runs, calculate complete sections and separate downspout, removal and installation costs.

Roofing & ExteriorRoof Decking Cost CalculatorCalculate roof sheathing sheets with pitch and waste, plus separate sheathing removal and installation quotes.

Roofing & ExteriorRoof Repair Cost CalculatorSize isolated roofing patches, round material orders and price labor, removal and flashing separately.

Roofing & ExteriorSkylight Installation Cost CalculatorCalculate roof opening and flashing quantities for skylights with optional interior shaft finishing.

Roofing & ExteriorSiding Cost CalculatorCalculate exterior wall coverage with gables and openings, then estimate siding carton quantities and costs.

Roofing & ExteriorRoof Area and Pitch CalculatorTurn building dimensions, separate overhangs and a uniform gable pitch into measured roof surface and order area.

Roofing & ExteriorRoofing Material Quantity CalculatorConvert measured roof area into whole product purchase quantities without assuming that all roofing bundles cover the same area.

Planning roofing projects

A roof-area calculation establishes the sloped surface, while the material-order tools convert it into bundles, sheets or purchased panel lengths. Repair and replacement budgets include separately quoted work; the gutter estimator follows measured eaves and downspout drops.