Category 09 · Tool 31
Roof Area Calculator
Calculate gable-roof surface area from building dimensions and pitch.
Calculator inputs
Result
Result
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Important: Choose the unit shown above; do not mix feet, meters, inches or other units within a dimensional set. Gable roof surface area from building length, width and pitch. This calculator is for general planning/reference only. It does not replace project-specific engineering design, applicable local codes, manufacturer data, site investigation, or qualified professional review.
How to use this calculator
What to enter
Enter or select the following as requested: Dimension unit; Building length; Building width; Roof pitch (rise per 12 run). Follow the units, valid ranges, examples, and options displayed beside each field.
What the result means
The area result estimates the two-dimensional surface covered by the dimensions entered. Check the displayed unit (for example, square metres or square feet) and whether openings, slopes, or waste allowances are included.
When to use it
Use this to estimate surface area for planning, material quantities, space measurement, or land measurement. Confirm that all dimensions use compatible units.