Shingle Calculator
Calculate roofing shingle bundles needed for your roof. Enter dimensions, pitch, and waste factor.
๐ Shingle Calculator
Results
Actual Roof Area804.98 sq ft
Roofing Squares8.9 squares
Bundles (3-tab)27 bundles
Roofing Nails15 lbs
๐ก How to Calculate Roofing Shingles
Roofing is measured in squares โ one square = 100 sq ft. Standard 3-tab shingles come 3 bundles per square. Architectural shingles may require 4โ5 bundles per square. Account for roof pitch using the pitch multiplier.
Add 10โ15% waste for valleys, hips, ridges, and starter courses. Complex roofs with many valleys and dormers waste more material. Ridge cap shingles are sold separately โ plan 1 bundle per 20โ35 linear feet of ridge.
A 30ร24 ft gable roof at 6/12 pitch: flat area = 720 sq ft ร 1.118 = 805 sq ft + 10% = 886 sq ft = 8.9 squares = 27 bundles of 3-tab shingles.