Roofing Calculator

Estimate shingles, bundles, and cost for a roof replacement or new installation.

Roof Length (ft)

Roof Width (ft)

Roof Pitch

Existing Layers

Ridge Length (linear ft)

Price per Square ($)

Shingle Bundles

14.8 squares (incl. 10% waste)

Material Cost

$2,214

Flat Area

1,200 ft²

Actual Area

1,342 ft²

Ridge Cap Bundles

Pitch Multiplier

×1.118

1 roofing square = 100 sq ft. 3 bundles = 1 square (for 3-tab shingles). Includes 10% waste. Does not include underlayment, nails, or labor.