🏘️
Roof Area Calculator
Calculate roof area from house footprint and pitch (rise/run). Includes hip and gable adjustments. Used for roofing material estimates.
LIFESTYLECalculate roof area from house footprint and pitch (rise/run). Includes hip and gable adjustments. Used for roofing material estimates.
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
Disclaimer: Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Roof Area Calculator
Actual roof area = footprint × pitch multiplier. A 6/12 pitch (most common) adds ~12% to footprint area; 12/12 pitch adds ~41%.
Low slope: 1-4. Standard: 4-9. Steep: 10+.
Actual Roof Area
1342 sq ft (13.4 squares)
House footprint1200 sq ft
Pitch multiplier1.1180
Roof angle26.6°
Frequently Asked Questions
What is the Roof Area Calculator for?
Calculate roof area from house footprint and pitch (rise/run). Includes hip and gable adjustments. Used for roofing material estimates.
How do I use the Roof Area Calculator?
Detailed instructions, formula notes, and US-context guidance shown in the calculator above.
How accurate are my roof area results?
Estimate only. Consult a qualified professional for decisions with major financial, legal, or health consequences.
Is the Roof Area Calculator free to use?
Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.