Roofing & siding calculators
Roofing squares, shingle bundles, roof pitch, rafter length and siding — what to order for a gable or hip roof and the walls under it.
- Rafter calculatorFind common rafter length for a gable roof from the building width, roof pitch and overhang, plus the lumber length to buy, cut angles and number of rafters.
- Roof pitch calculatorFind your roof pitch in inches per 12 from rise and run, ridge height and span, or the angle, with degrees, percent slope, pitch factor and shingle limits.
- Roofing calculatorCalculate roofing squares for a gable or hip roof from its footprint and pitch, with shingle bundles, underlayment, ice barrier, drip edge and cost per square.
- Shingle calculatorCalculate how many bundles of shingles you need for a gable or hip roof from its footprint and pitch, plus squares, starter strip, drip edge and ridge cap.
- Siding calculatorCalculate how much siding you need for a house in squares and boxes, from wall size and height, gable ends and roof pitch, minus doors and windows.