calcs.homes

Roofing calculators

8 free tools for measuring a roof and estimating shingles, panels, framing, and cost.

Roof Pitch Calculator Most popular
Pitch as x-in-12, roof angle, slope percent, and slope factor.
Open calculator →
Roof Area Calculator
Total roof surface area and roofing squares from footprint and pitch.
Open calculator →
Shingle Calculator
Squares, bundles of shingles, and material cost from roof area.
Open calculator →
Rafter Length Calculator
Common rafter length, overhang tail, and total board length by pitch.
Open calculator →
Metal Roof Panel Calculator
Panels, linear feet, and cost for a standing-seam or corrugated roof.
Open calculator →
Roof Truss Calculator
Truss count for a given length and on-center spacing, plus cost.
Open calculator →
Roof Ventilation Calculator
Net free area, balanced intake/exhaust, and ridge vent length.
Open calculator →
Gutter & Downspout Calculator
Downspout count and gutter slope for a roof drainage area.
Open calculator →