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Composite Section Moment of Inertia Calculator
Combine component shapes using centroid calculations and the parallel-axis theorem.
Composite Section Moment of Inertia Calculator
Define your section
Two-rectangle composite section
Width of the first rectangle
Height of the first rectangle
Width of the second rectangle
Height of the second rectangle
Height of its centroid above the common baseline
Calculated properties
Σ(Ic + Ad²)- Two non-overlapping rectangles; Rectangle 2 centroid height is measured from a common baseline.
Length inputs are converted to millimetres for calculations. Review the assumptions before using results in engineering work.
About this calculation
Enter the required dimensions and select the appropriate length unit. The calculator displays results based on the selected calculation and its stated assumptions.
Moment of inertia and related section properties depend on the geometry, reference axes, units, and assumptions used. Review the displayed formula and assumptions before using any result.
These tools are intended for educational and preliminary engineering calculations. Independently verify critical results before using them in engineering design or safety-related work.
Calculation methodology
Learn about formulas, units, assumptions, and calculation limitations in our calculation methodology.