Free Calculator

Roofing Calculator

Calculate roof area, materials, and cost. Get instant estimates for shingles, underlayment, and more.

Enter Roof Dimensions
ft
ft
Estimated Materials & Cost
Roof Area
-
sq ft
Roof Squares
-
1 square = 100 sq ft
Material Cost
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materials only
Estimated Total
-
incl. labor & extras
Materials Breakdown
Roofing Shingles -
Underlayment (felt) -
Starter Strip -
Hip & Ridge Caps -
Nails (lb) -
Roof Pitch Multipliers
Pitch Multiplier Chart 1:12 1.000 4:12 1.054 6:12 1.118 8:12 1.202 10:12 1.302 12:12 1.414