Choose the section shape and axis.

Calculate gross geometric properties before using them in stress, deflection, or stability checks. These tools describe shape only; they do not calculate material resistance or code capacity.

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Section property tools.

Confirm the dimensions and the axis shown by each calculator. Gross properties do not include openings, cracking, local buckling, effective widths, or composite action.

Solid sections

Basic geometric properties for common solid shapes.

Rectangular sectionArea, I, Z, and radius of gyration.
Solid circular sectionArea, centroidal inertia, modulus, and radius.

Flanged & angle sections

Strong- and weak-axis properties for idealised component rectangles.

Symmetric I-sectionArea, Ix, Iy, Zx, Zy, rx, and ry.
T-sectionCentroid, inertia, and top/bottom section moduli.
L-sectionArea, centroid, and centroidal axis properties.