Enter your house dimensions, roof pitch, and material type to estimate total replacement cost.
Total Roof Area
0 sq ft
Roofing Squares Required (1 Sq = 100 sq ft)
0 squares
Estimated Total Cost
$0
Includes estimated materials, labor, and pitch multiplier factor (+10% waste fee included).
Calculating roof size is essential when planning a roof replacement or purchasing materials like asphalt shingles, metal panels, or roofing underlayment. Because roofs are sloped, the actual roof surface area is always larger than the flat footprint of your home.
In roofing, 1 "Square" equals 100 square feet of roof area. If your roof is 1,800 sq ft, you need 18 roofing squares of shingles.
In the US, an average 2,000 sq ft roof costs between $7,000 and $12,000 for standard asphalt architectural shingles, depending on pitch and labor rates.