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Roofing Calculator

Enter building plan dimensions, pitch, overhang, bundle coverage and waste to build a transparent simple-gable material estimate.

—Roof surface
—Roofing squares
—Bundles
—Pitch factor
—Simple two-sided gable-roof area estimate.

Complex hips, valleys, dormers, flashing, starter/ridge materials, underlayment, local code, and installation details are not modeled.

Pitch & waste planning

Compare the current simple-gable estimate with nearby waste allowances and a transparent pitch factor.

—Roof surface
—Purchase area
—Roofing squares
—Pitch angle
WastePurchase ft²Squares
Complex roofs should be measured by individual planes. Starter, ridge, valley, flashing and underlayment quantities are not implied by bundle count.
Construction field-work cluster

Carry measurement uncertainty into the material decision

Use the exact calculator first, then stress-test realistic field measurement and rounding tolerance before a cut or purchase. Keep structural design, code approval and supplier specifications outside the browser estimate.

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Planning notes

Start with the measurement this calculator asks for, then use related length, area/volume, roof, stair, material, waste, or cut-planning tools only when the job needs them. Inputs and results stay in the browser.

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