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Roofing Shingle Calculator

Enter roof area, waste allowance, and bundles per square to calculate how many shingle bundles you need.

66 bundles
20.00 roofing squares (22.00 with waste allowance)

A "square" is roofing terminology for 100 square feet of roof surface. Most standard 3-tab and architectural shingles come 3 bundles per square, but check your specific product's packaging — some heavier shingles use 4 or 5 bundles per square.

How to use this tool

  1. 1Enter total roof area in square feet.
  2. 2Enter a waste/overlap allowance.
  3. 3Enter bundles per square for your shingle product.
  4. 4See total bundles needed.

Frequently asked questions

What is a roofing square?+

A square is roofing terminology for 100 square feet of roof surface, regardless of the actual shingle product used.

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