Moment of Inertia Converter

Understanding Moment of Inertia

Moment of inertia measures an object's resistance to angular acceleration. You express it in kilogram-square meters (kg·m²). Moment of inertia depends on mass distribution relative to the rotation axis.

Moment of inertia is the rotational equivalent of mass. Larger moment of inertia requires more torque to achieve the same angular acceleration. Mass farther from the axis contributes more to moment of inertia.

Moment of Inertia Formulas

Example: A 10 kg solid cylinder with 0.2 m radius has I = 0.5 × 10 × 0.2² = 0.2 kg·m².

Common Moment of Inertia Conversions

Common Shapes Moment of Inertia

Practical Applications

Frequently Asked Questions