đī¸ Shingle Calculator
Calculate how many shingle bundles you need for your roof. Accounts for waste factor and provides cost estimates by shingle type.
How to Use This Calculator
Enter your total roof area in square feet (use our Roof Area Calculator if needed). Select your shingle type â architectural shingles are the most popular choice for residential roofs. Adjust the waste factor based on your roof complexity. Simple gable roofs need 10% waste, while complex roofs with valleys and dormers need 15-20%.
Understanding Your Results
Bundles are how shingles are packaged â most shingles come 3 bundles per square. The cost estimate is for materials only and does not include labor, underlayment, or accessories. Actual prices vary by brand, region, and retailer. Always buy a few extra bundles for future repairs.
Frequently Asked Questions
How many bundles of shingles do I need?
Most shingles come 3 bundles per square (100 sq ft). Divide your roof area by 100 to get squares, then multiply by 3 for bundles. Add 10-15% for waste, cuts, and starter/ridge shingles.
How much waste should I plan for shingles?
Plan for 10% waste on simple gable roofs. Add 15% for hip roofs or roofs with many valleys, dormers, or penetrations. Complex roof lines create more cut waste.
What is the difference between 3-tab and architectural shingles?
3-tab shingles are flat, single-layer shingles that are the most affordable option. Architectural (dimensional) shingles have a layered, textured look, better wind resistance, and typically last 25-30 years vs 15-20 for 3-tab.