Roof Square Footage Calculator

Calculate total roof area including pitch adjustment and waste factor. Perfect for material ordering.

Building Length

Measure from outside wall to outside wall

Building Width

Include overhangs if measuring roof edge to edge

Roof Pitch

Most residential roofs are 4/12 to 6/12

6/12 pitch selected

Base Area

Pitch Factor

Total Roof Area

Includes 10% waste factor

Squares

Bundles

1 Measure building length and width at ground level

2 Determine pitch: measure rise over 12" run

3 For complex roofs, calculate each section separately

Free Forever

Want These Tools on Your Website?

Get a professional roofing website with these calculators built-in. Generate leads while you sleep.

Takes less than 60 seconds