THE ROOFKARMA RESOURCE LIBRARY
Free roofing calculators
Roofing measurement, estimation & technical industry resources. Free tools, useful definitions and guides you can put to work.
3 resources
Featured Free Tools
Calculate pitch, roofing squares and waste scenarios with explicit units and assumptions.
Roof Pitch Calculator: Ratio, Angle & Multiplier
Convert vertical rise and horizontal run into pitch, angle and a surface-area multiplier.
Explore resourceRoofing Waste Factor Calculator
Compare 10%, 12%, 15% and 20% waste scenarios against your net roof area.
Explore resourceRoofing Square Calculator: Footprint to Roof Area
Convert roof area into squares with a clear choice between sloped surface and horizontal projection.
Explore resource