Roofing: Uniform-pitch roof over the entered footprint.
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Roofing Calculator for United States
USD · 12,345.67US customary measurementsRoad distance: miles
United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
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Your details
Enter building length including overhang (ft). The calculation converts these units internally.
Enter building width including overhang (ft). The calculation converts these units internally.
%
Example only. Enter the amount or rate applicable to your situation in United States.
Enter coverage per bundle (ft²). The calculation converts these units internally.
USD
Enter material price per ft². The calculation converts these units internally. Example only. Enter the amount or rate applicable to your situation in United States.
Purchase area (ft²)
1,270.835
Amounts in USD · United States · editable planning estimate
Net roof area (ft²)1,155.304
Whole bundles39
Estimated material cost$2,361.29
Pitch angle (degrees)26.565
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How this result was calculated
Sloped roof area=horizontal footprint×√(1+(rise/12)²); apply waste, then round bundles up.
Country setup: United States. Displayed measurements are converted to the formula's base units internally.
Assumption: Uniform-pitch roof over the entered footprint. Complex intersections, dormers, valleys and different pitches need separate sections. United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
Calculation version 1.0.0 · Support state: generic
Formula and method
Sloped roof area=horizontal footprint×√(1+(rise/12)²); apply waste, then round bundles up.
This calculation uses the values you enter. It runs in your browser and does not request a location or account.
Worked example
A 6:12 pitch multiplies horizontal area by about 1.118.
Questions people ask
Which method does this tool use?
Sloped roof area=horizontal footprint×√(1+(rise/12)²); apply waste, then round bundles up.
What should I check before using the result?
Uniform-pitch roof over the entered footprint. Complex intersections, dormers, valleys and different pitches need separate sections.