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15 calculators

Roofing Materials Calculators

Estimate shingles, metal panels, tiles, underlayment, and other materials. All tools are free — no registration or download required.

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Shingle Calculator
Calculate how many bundles of shingles you need for your roof
basic
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Metal Roof Calculator
Calculate metal roofing panels, trim, and fasteners needed
intermediate
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Tile Roof Calculator
Calculate clay or concrete roof tiles needed with waste factor
intermediate
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Roof Underlayment Calculator
Calculate rolls of felt or synthetic underlayment for your roof
basic
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Roof Sheathing Calculator
Calculate plywood or OSB sheets needed for roof decking
basic
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Roofing Nails Calculator
Calculate the number and weight of roofing nails needed
basic
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Ice & Water Shield Calculator
Calculate ice and water barrier membrane needed for eaves and valleys
basic
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Roof Waste Calculator
Calculate material waste factor based on roof complexity and hip/valley count
basic
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Slate Roof Calculator
Calculate natural or synthetic slate tiles needed for your roof
intermediate
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Wood Shake Calculator
Calculate cedar shakes or wood shingles needed for your roof
intermediate
TPO Roof Calculator
Calculate TPO single-ply membrane for commercial flat roofs
intermediate
EPDM Roof Calculator
Calculate EPDM rubber roofing membrane for flat roofs
intermediate
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Roof Coating Calculator
Calculate roof coating coverage for restoration and waterproofing
basic
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PVC Roof Calculator
Calculate PVC membrane roofing for flat and low-slope roofs
intermediate
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Rolled Roofing Calculator
Calculate mineral-surface rolled roofing for sheds and low-slope roofs
basic

About Roofing Materials

This category contains 15 specialized calculators covering all aspects of roofing materials. Whether you are a homeowner planning a project or a roofing contractor estimating materials, these tools give you accurate results based on industry-standard formulas.

Each calculator includes step-by-step guidance, example calculations, and explanations of the underlying formulas so you understand exactly how your numbers are derived. Results are suitable for budgeting and planning — always consult a licensed roofing professional before starting structural work.

How to Use These Calculators

Start by entering your roof's basic dimensions. Most calculators need length, width, and pitch at minimum. Results update instantly as you type. Use the unit toggle to switch between imperial (feet, inches) and metric (meters) measurements. All calculators are mobile-friendly and work on any device.

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