How this calculator works
Roofing material is commonly planned in squares. One roofing square is 100 sq ft. Add waste before multiplying by bundles per square and rounding up.
Roofing Shingle Calculator
Convert measured roof area into roofing squares and shingle bundle count before buying.
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Measuring tips
- Measure twice and record dimensions in feet.
- Add waste for cuts, uneven areas, mistakes, and future repairs.
- Check product packaging for exact coverage and unit size before buying.
FAQ
Is this a final quote?
No. It is a planning estimate. Local pricing, product sizes, and jobsite conditions can change the final purchase amount.
Why include waste?
Most projects need extra material for cuts, overlap, damage, and future touch-ups.
Can I print the result?
Yes. Use the print button to save the estimate or bring it to the store.