Planning notes
Roof Shingle Calculator questions
What is a roofing square?
One roofing square equals 100 square feet of roof area.
How many shingle bundles are in a square?
Many asphalt shingles use 3 bundles per square, but architectural shingles vary by product.
Is this safe for roof work?
This is only a planning calculator. Do not climb a roof unless you have the right training and safety equipment.
Before you buy
Use this estimate as a planning starting point. Product coverage, waste, local prices, code rules, and site conditions can change the final amount.