Calculate the total roof area from pitch, length, and width. Accounts for the slope of the roof to give accurate square footage for material ordering.
Enter your values below
Enter the horizontal length of the roof.
Enter the horizontal width of the roof.
Enter the rise in inches per 12 inches of run.
How this calculator works
Roof area equals length times width times the pitch factor. The pitch factor is the square root of 1 plus the slope squared, which adjusts the flat area for the roof's pitch.
Common questions about this calculator
