# Mass moment of inertia of a solid disc

Calculates the mass moment of inertia of a thin solid disc.

`I_z = 1/2*m*R^2` (about central axis)

`I_x=I_y = 1/4*m*R^2` (about diameter)**Enter 'x' in the field to be calculated.**

We use the following formulas to calculate the mass moment of inertia of a thin solid disc.

Case of a rotation about the central axis (z-axis on above diagram),

`I_z = 1/2*m*R^2`

Case of a rotation about the disc diameter (x-axis or y-axis on above diagram),

`I_x = I_y = 1/4*m*R^2`

m : mass of the disk (kg)

R : its radius in meter (m)

## See also

Mass moment of inertia Calculators

Convert mass units

Convert distance units

Convert units of mass moment of inertia

Physics Calculators