Roofing
Calculators and plain-English guides for measuring a roof and working out materials, so you can check a contractor's numbers or plan your own project.
Topics in roofing
Measure a roof
Find pitch, rafter length, roof area, hip lengths and roofing squares.
- Roof pitch calculator
- How to measure roof pitch
- Roof area calculator
- Hip roof calculator
Shingles and materials
Count shingles and metal panels, size attic vents, and check slope and re-roofing rules.
- Shingle calculator
- Minimum pitch for shingles
- Shingling over old shingles
- Metal roof calculator