Formula
Sloped area = footprint area × pitch factor; one roofing square is 100 ft².
CONSTRUCTION CALCULATORS
Roofing Calculator
Estimate roof area, squares, shingle bundles and underlayment.
HOW IT WORKS
How to use the Roofing Calculator
- Enter the requested values and select the appropriate units or options.
- Review the live result and breakdown.
- Copy or export the result for your notes, then verify consequential decisions.
Worked example
A 1,200 ft² footprint with a 6:12 pitch has a factor of about 1.118.
Practical guidance
Measure carefully, keep units consistent and treat rounded quantities as planning estimates. Supplier specifications and professional requirements take priority.
Frequently asked questions
Is the Roofing Calculator free?
Yes. It runs in your browser without signup or a paid result screen.
Does Labureka store my input?
No tool input is sent to Labureka by the calculator code. Avoid entering sensitive information on shared devices.
How accurate is the result?
The calculation follows this documented method: Sloped area = footprint area × pitch factor; one roofing square is 100 ft². Accuracy still depends on the inputs and assumptions.
Can I copy or export the result?
Yes. Use the copy and CSV buttons beside the result. QR tools also provide image downloads.