Roof Square Footage Calculator
Calculate your roof's total square footage
How to use this calculator
The Master Roofer here—follow these steps to get a solid estimate:
- Enter roof length and width in feet (house footprint).
- Enter roof pitch as rise/12 (e.g. 6 for 6/12). Use Roof Pitch Calculator if you don't know it.
- Click Calculate to see base area, roof area, and squares.
Don't know pitch? Use our Roof Pitch Calculator first, then come back.
Common pitches: 4/12, 6/12, 8/12, 12/12