theorems
Polar Moment of Inertia Calculator
Calculate polar second moment of area for suitable cross-sections and axes.
Polar Moment of Inertia Calculator
Define your section
Solid circular section
Diameter of the solid circle
Calculated properties
J = πd⁴/32 = Ix + Iy- Solid circular section.
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.