Shingle Calculator
Estimate the number of shingle bundles needed for a roof. Enter roof dimensions and waste factor to get accurate material estimates.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
Previous Results
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Frequently Asked Questions
A bundle of 3-tab shingles typically covers 33.3 sq ft, while architectural shingles cover 25 sq ft per bundle. Premium shingles cover 20 sq ft per bundle. Our calculator uses bundles per square (100 sq ft) to simplify.
Waste factor accounts for cut-offs, damaged shingles, and mistakes during installation. Typically 5-15% is added to the total area.
Measure the length and width of each roof plane (rectangle) in feet. Multiply to get area. For complex roofs, sum the areas of all planes. Our calculator assumes a single rectangular plane.
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