Roofing Calculator
Calculate
Formula
Roof Area = Length × Width × Pitch Multiplier. Squares = Area ÷ 100. Bundles = Squares × 3.
Frequently Asked Questions
What is a roofing square?
One roofing square equals 100 square feet of roof area. Shingles are sold in bundles, with 3 bundles covering 1 square.
Why does roof pitch matter?
A steeper pitch increases the actual surface area compared to the flat footprint, requiring more material.
You may also need
~
Square Footage Calculator
Free square footage calculator. Calculate area in square feet for rooms, homes, flooring, and landscaping. Supports rectangular, circular, and triangular shapes.
Everyday~
Gutter Calculator
Free gutter calculator. Estimate gutter length, downspouts, and sections needed for your roof.
Everyday