PangPang Tools10×5 m plan, 3 m rise over a 4 m run
62.5 m² sloped surfaceEstimate a uniform sloping surface from plan dimensions and the vertical rise and horizontal run. The calculator reports pitch angle, surface area and material allowance.
Area & Drawings
Sloped Surface Actual Area Calculator
About this tool
Estimate a uniform sloping surface from plan dimensions and the vertical rise and horizontal run. The calculator reports pitch angle, surface area and material allowance.
Slopes & roofs
Choose a task. Inputs stay in this page only.
MAKE IT SIMPLE
Result
Worked examples
MAKE IT SIMPLE
Result
Worked examples
Elevation difference (m): 1, Horizontal run (m): 10
Grade: 10 %Using these sample input values gives the first labelled output above. Run must be horizontal, not a distance measured along the tilted surface.
Questions & answers
Can I use the default numbers for purchasing or safety certification?
No. Replace the examples with your real values. Run must be horizontal, not a distance measured along the tilted surface.
MAKE IT SIMPLE
Result
Worked examples
10×8 m roof projection at zero pitch
80 m² surfaceEstimate a uniform roof plane by dividing its horizontal projected area by cosine of roof pitch angle. Apply waste allowance and product coverage to estimate whole material packs.