Roof Area Calculator

Calculate roof area from dimensions and pitch.

Building Length (ft)

Building Width (ft)

Pitch (x:12)

Overhang (in)

Roof Area

1503 ft²

Roofing Squares

15.0

Shingle Bundles

Multiplier

1.118

Note: 1 square = 100 ft². Standard 3-tab shingles = 3 bundles per square. Add 10-15% for waste, hips, and valleys.