Shingle Calculator
Estimate the number of shingle bundles required from roof area and the coverage per bundle. Enter your roof area directly or use the roofing calculator first.
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How the shingle calculator works
Estimate the number of shingle bundles required from roof area and the coverage per bundle. Enter your roof area directly or use the roofing calculator first.
Bundles = roof area × (1 + waste%) ÷ bundle coverage, rounded up. The calculator is designed to give a useful first-pass material estimate while keeping the assumptions visible. For a purchase, compare the result with the product packaging or supplier quotation.
Common search terms for this tool include shingle calculator, roof shingle calculator, how many shingles do I need, shingle bundle calculator. The wording is included naturally so the page answers the same questions people ask when planning a project.
Frequently asked questions
How much area does a shingle bundle cover?
Coverage varies by product. Use the coverage printed on the package.
Does the estimate include waste?
Yes. Choose a waste allowance for cuts, starter courses and other losses.
Do I need ridge caps separately?
Usually yes. Ridge and hip products can have separate coverage and should be estimated separately.
Can I enter square feet?
Yes. Use the unit selector and keep roof area and bundle coverage in the same unit.