Radius of Gyration Calculator

We prepared the radius of the gyration calculator here. So, you can use this calculator to easily calculate the radius of gyrations of objects. Because you will need this value in different kinds of mechanical calculations.

Radius Of Gyration Calculator

What is the Radius of Gyration?

Explanation of radius of gyration.
Radius of gyration representation(SRC: Civilsnapshot).

Firstly, we calculate the radius of gyration for cross-sections of 3D bodies or features. For each cross-section of bodies, the radius of gyration is also changed. The radius of gyration is generally used for buckling calculations of columns. The formula of the radius of gyration;

r is the radius of gyration of the cross-section. ‘I’ is the inertia moment of the cross-section and A is the area of the cross-section. Also, some cross-sections can have multiple cross-sectional inertias. When you calculate the radius of gyration, it must be the minimum value of that cross-section.

How to Use Radius of Gyration Calculator?

Use of the radius of gyration calculator.
The radius of the gyration calculator.

Secondly, the use of the radius of the gyration calculator is very easy as you see above. Also, you just need to enter the I value in which the default unit is mm^4. Enter the area which is A as shown by the green arrow above that mm^2 can be the default unit for it.

Click on the ‘Calculate!’ button to calculate the radius of gyration in an mm unit. If you want to do this calculation again, click on the ‘Reset’ button as shown by the blue arrow above.


If you are interested in the guidebook that is used for this article, click on the button to check it from Amazon!

Above all, click to see if our other engineering calculators are available in Mechanicalland!

When you calculate the radius of gyration, your units must be consistent like above.

Also, Mechanicalland does not accept any responsibility for your calculations. Your calculations are about your engineering capability.

Finally, do not forget to leave your comments and questions about the radius of the gyration calculator below. Your precious feedbacks are very important to us.


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