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Use the address that best matches your request. This helps calculator feedback, corrections, privacy questions, and general inquiries reach the right place.

Reporting calculator issues

What to include with a correction request

If you are reporting a calculator issue, include enough detail for the result to be checked against the same inputs.

• The calculator page you used, such as Roofing Calculator, Roof Area Calculator, or Shingle Calculator.
• The values entered into the fields and any transferred values from another RoofCalc tool.
• The result shown and what you expected the calculator to show instead.
• Any roofing field condition that affects the calculation, such as unusual pitch, layout complexity, or product coverage.

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Planning estimates, not final material counts

RoofCalc.tools provides field-estimate calculators for planning roofing quantities and rough material ranges. Final counts should be checked against actual roof measurements, roof layout, product coverage, local requirements, and contractor assessment.

The calculators are planning tools and do not replace jobsite measurement, product instructions, local requirements, or professional assessment.

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If you reached this page while looking for a roofing calculation, start with the tool that matches the value you already know.