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    Area & Drawings

    Sloped Surface Actual Area Calculator

    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.

    MAKE IT SIMPLE
    Assumptions and limitations

    Valid for a uniform single-direction slope. Curved terrain and compound pitch require separate measurements.

    Result

    Worked examples

    10×5 m plan, 3 m rise over a 4 m run

    62.5 m² sloped surface

    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.

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