Welcome to our calculator for moment of inertia for a circular hollow section. Enter the diameter (**D**) and the steel thickness (**t**) of your section below, and see the results in the output section below.

This tool calculates **Ixx** and **Iyy** about the centroidal axis.

The moment of inertia of a circular hollow section can be calculated using the equations shown to the right. **D** represents the section's diameter, and d is the diameter of the hollow space.

Enter your inputs, and see outputs for **Ixx** and **Iyy** and section dimensions below!

D

:100mm

t

:4mm

Ixx (mm4)

:1392152.8

Iyy (mm4)

:1392152.8

d

:92mm

Area

:1206.37158mm2

xc

:50mm

yc

:50mm

💬 We'd love your feedback on this template! It takes 1min