Roofing

Roofing Calculators

Roof area, shingles, underlayment, and gutter sizing. Based on NRCA and SMACNA standards.

Made for roofers

Five calculators for the roof

From estimating material quantities to sizing gutters, these tools cover the math roofers reach for every job.

Calculate total sloped roof area from footprint and pitch. Outputs square footage and squares.

Estimate bundles and squares needed from roof area with configurable waste factor.

Calculate pitch ratio, angle, pitch factor, and rafter length from rise and run.

Calculate rolls of underlayment needed based on roof area and overlap percentage.

Get recommended gutter size and downspout count for your roof drainage area.

Estimates, invoices, scheduling, and payments in one place. Free to start.