Roofing calculator

Shingle bundles and roofing squares from your roof area, with a pitch multiplier to turn a ground footprint into the true sloped area and a waste allowance for hips and valleys.

Roof area (footprint)

sq ft

Ground footprint; the pitch below converts it to the sloped area.

Roof pitchWaste allowance

10%, more for hips + valleys.Bundles / square

3 for most architectural shingles.Price per bundle

Buy74 bundles$2,590.00 · 24.6 squares

Sloped area2,236 sq ft

Area + waste2,460 sq ft

Squares24.60

Shingle bundles only. Underlayment, drip edge, ridge cap, starter strip, and nails are separate. Measure the footprint from the ground and let the pitch do the slope, or enter a measured sloped area with pitch set to flat.

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