Annular section properties

Annular section properties with explicit inputs, units and reproducible calculations.

Inputs

• Outer diameter (mm)
• Inner diameter (mm)

Assumptions and limitations

Ideal sharp-corner geometry. Centroidal area moments, not mass moments or design resistance. Origin at bottom left; no fillets, strength, buckling or code checks. Dimensions limited to 1000 mm; exact arithmetic overflow is rejected.

Source

Calculation source

Interactive calculators require JavaScript and the calculation service.