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Free roofing calculators and reference charts, built for the truck.
Free browser-based roofing calculators and reference charts, from pitch and slope factor to material takeoff. Everything runs on your device, nothing you enter is uploaded.
Open the pitch chart →Roof Pitch Chart
Full 1/12-24/12 pitch table plus a live angle/slope/grade converter.
Roof Pitch Calculator
Any rise, run, or angle, including non-integer pitches. Live diagram.
Rafter Length Calculator
Line, overhang, and total rafter length from span, pitch, and ridge.
Roof Area Calculator
Footprint and pitch to true roof area, squares, and waste allowance.
Hip & Valley Rafter Calculator
Correct hip and valley length using the diagonal 17 run, not 12.
Shingle Squares & Bundles Calculator
Roof area or squares to a real bundle order, with waste and allowances.