Roofing Calculator for Shingles & Roof Pitch
Calculate the true surface area of pitched roofs using rise-over-run slope geometry. Determines the number of roofing squares (100 sq ft), shingle bundles (3 bundles/square), underlayment felt rolls, and eaves overhangs.
Roof Dimensions & Pitch
Roofing Materials Specification
How to Use Roofing Calculator for Shingles & Roof Pitch
Enter Footprint Dimensions
Input building length and width including eave overhang.
Select Roof Pitch
Choose your roof slope (e.g. 4/12, 6/12, 8/12) to calculate the true slope multiplier.
Check Material Quantities
View total squares, bundles of shingles to order, and underlayment rolls.
Frequently Asked Questions
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