Your next home project
Roofing calculators
Turn your roof measurements into bundles or panels. Then check the work included in each quote.
1MeasureMeasure your roofIn the roofing calculator, with a drawing of your numbers.
2Get the list42 shingle bundlesand 5 more items in the example, ready to print.
3What it costs$10,000 typical jobWhat U.S. owners paid for roofing work, and in 15 big metros.
4Compare quotesRoof replacement quote comparisonPut two or three quotes side by side, line by line.
What to buy
Roofing calculator
Turn roof measurements into shingle bundles, then take the same material list into your quotes.
Example answer: 42 shingle bundlesCalculate your materialsRoof pitch calculator
Convert rise and run to roof pitch, angle and sloped area. Carry the pitch into your roofing list.
Example answer: 6 in 12 roof pitchCalculate your materialsMetal roofing calculator
Count panels for each rectangular roof plane, with a separate list for trim and fastening.
Example answer: 16 full-length panelsCalculate your materialsRoof debris calculator
Estimate tear-off weight from roof area, layers and your material’s weight. Compare the weight with a hauler’s load limit.
Example answer: 2,400 lb of estimated debrisCalculate your materialsWhat will it cost?
What homeowners reported paying to the Census Bureau (American Housing Survey 2023).
Got quotes? Put the work beside the price
Before you call, keep the roof quote checklist with your measurements.
Choose the tool that matches your measurements
| Your material or task | Measurements to bring | What you get |
|---|---|---|
| Roofing calculator | Footprint length, Footprint width, Pitch rise, in 12, Overhang past the walls, each side (in) | Shingle bundles, underlayment, starter strip, drip edge, ridge cap and nails |
| Roof pitch calculator | Rise (in), Horizontal run (in), Roof angle (degrees), Slope (%) | Roof pitch, angle and slope factor, and the sloped roof area |
| Metal roofing calculator | Slope length, Eave length | Full-length panels, trim, flashings and fasteners |
| Roof debris calculator | Sloped area to remove (sq ft), Layers being removed, Weight per roofing square per layer (lb) | Tons of tear-off debris, and the loads it takes at your hauler’s limit |
Before you measure or order
- How many bundles of shingles do I need? Squares, waste and accessories
Measure the roof’s footprint, multiply it by the pitch factor to get the sloped area, add about 10% for cuts and divide by 100 for squares. Most architectural and 3-tab shingles come 3 bundles to a square.
- How a roof replacement works: the steps and what to ask your roofer
A shingle roof replacement goes tear-off, deck repair, drip edge and underlayment, flashing, shingles from the eaves up, ridge vents and cap, then cleanup and a magnet sweep for nails. Each step should be a line in the written quote.