Roofing Calculators
Take on any roof with confidence using our free roofing calculators. Estimate roofing materials and coverage, find your roof pitch and angle, calculate rafter lengths and size up your guttering and downpipes.
These tools are ideal for new roofs, re-roofing and repairs, and every one works in both metric and imperial units. Choose the calculator you need below.
Roofing Calculators(4)
Roofing Calculator
Calculate roofing materials including shingles, underlayment, and ridge caps for your roof.
Roof Pitch Calculator
Find the pitch, angle, and slope of your roof from rise and run measurements.
Rafter Calculator
Calculate rafter length, birdsmouth cut, ridge height and tail length for common rafters.
Gutter Calculator
Calculate gutter length, downspouts, hangers, end caps, and connectors needed for your roof.