Roofing & Exterior Calculators
Shingle bundles and squares for roof replacements.
3 free tools — instant results, no sign-up.
Available calculators
Roofing Shingle CalculatorBundles and squares of asphalt shingles.Shingle CalculatorHow many shingles, bundles and squares you need.Roofing Cost CalculatorBundles of shingles and estimated material cost.
Popular project use cases
- Replacing an asphalt shingle roof
- Budgeting shingle material cost for a re-roof
- Estimating bundles and squares from the roof footprint
Choosing the right calculator
- The Roofing Shingle Calculator gives bundles and squares from your footprint and pitch.
- Need a budget? The Roofing Cost Calculator multiplies bundles by your price per bundle.
- Always measure the building footprint (length × width per plane), not the slope surface.
Good to know
Squares vs bundles: one roofing “square” is 100 ft², and standard 3-tab/architectural shingles come 3 bundles per square.
Roofing & Exterior FAQs
How many bundles of shingles make a square?
Three bundles make one square (100 ft²) for standard 3-tab and architectural shingles. The calculator applies your pitch and waste automatically.
How does roof pitch affect shingle quantity?
Steeper pitches have more surface area than the footprint. A 6/12 pitch adds about 12%, an 8/12 adds 20%, and a 12/12 adds 41%.
Other categories
Concrete & MasonryConcrete volume, bag counts and pavers for slabs, footings and patios.LandscapingMulch, gravel, topsoil and sod for yards, beds and lawns.Interior ProjectsPaint, drywall, flooring and tile for indoor rooms and surfaces.Outdoor ProjectsFence and deck board material lists for outdoor builds.MeasurementsSquare footage and area conversions — the starting point for every estimate.