What is this hub?
A roofing calculator hub collects tools for roof slope, roof surface area, shingle quantities, rafter layout, truss geometry, and material-cost estimates.
Calculator hub
Roofing Calculators.
Roofing calculators help convert roof dimensions, pitch, span, and waste into roof area, bundles, squares, rafter lengths, and truss geometry.
Why use these tools?
Roof estimates depend on pitch and complexity. A flat footprint is not the same as the sloped roof surface, and waste changes with hips, valleys, ridges, and cuts.
How to choose
Use roof pitch first when slope is unknown, roofing cost or shingle calculators for material takeoff, rafter length for stick framing, and roof truss tools for truss geometry context.
Available calculators
Choose a roofing tool
Roofing Cost Estimator
Estimate roof squares, bundles, underlayment, and material-only totals from your own pricing inputs.
Open calculatorRoof Pitch Calculator
Convert rise, run, span, and angle into pitch ratio, slope %, and rafter length.
Open calculatorRafter Length Calculator
Calculate common rafter length, overhang tail, cut length, and roof angle from pitch and span.
Open calculatorRoof Shingle Calculator
Estimate roofing squares, shingle bundles, starter, ridge cap, and underlayment for simple roofs.
Open calculatorRoof Truss Calculator
Estimate roof truss span geometry, top chord, bottom chord, heel height, and roof area per truss bay.
Open calculator
Common questions
Why does roof pitch affect material quantity?
Pitch increases the actual sloped roof area compared with the building footprint. Steeper roofs need more material for the same horizontal span.
What is a roofing square?
A roofing square is 100 square feet of roof surface area. Shingles and many roof materials are commonly estimated in squares.