Roof Calculator
Estimate roofing materials and area
Formula Used
Roof Area = Footprint Area × √(1 + Pitch²) where Pitch = rise / run
Step-by-Step Explanation
- 1Enter the roof's length and width (footprint dimensions).
- 2Enter the roof pitch as a rise/run ratio (e.g. 0.5 for a moderate slope).
Worked Examples
Example 1
12m × 8m footprint, 0.5 pitch
Length=12, Width=8, Pitch=0.5
Roof area ≈ 107.3 m²