Radius of Gyration Calculator
Calculate the radius of gyration (r) for structural sections. Essential for column buckling analysis and slenderness ratio calculations.
Input Method
in&sup4;
in²
Minimum Radius of Gyration
3.1623 in
rx (Strong Axis)
3.1623 in
ry (Weak Axis)
3.1623 in
Ix
100.00 in&sup4;
Iy
100.00 in&sup4;
Area
10.00 in²
r minimum
3.1623 in
Example Slenderness (12 ft column)
L/rx = 45.5
L/ry = 45.5
L/rmin = 45.5
Formula
r = √(I/A)
The radius of gyration represents the distance from the centroid at which the entire area could be concentrated to give the same moment of inertia.