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Timber Calculator

Roof Area Calculator

Plan area × sec(slope) → actual roof area. Add eave perimeter and overhang to include eave area.

Roof Geometry

Plan Area (m²)

One-story footprint area covered by the roof

Slope Angle (°)

Eave (optional)

Eave Perimeter (m)

Length of eave perimeter. 0 = skip eave area.

Eave Overhang (mm)

Result

Enter plan area and slope angle.

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These calculators reference KS standards and Korean building code for informational purposes only. Actual design and installation must be reviewed by a licensed professional.

Roof Area Calculator | Workmate