UnitConMoment of Inertia
Moment of inertia measures how strongly an object resists rotational acceleration about an axis. It depends not only on total mass, but also on how that mass is distributed relative to the axis of rotation. This converter is useful for flywheels, gears, motors, rotors, and mechanical design calculations. It helps compare SI and customary inertia values cleanly.
Common conversions
| From | To |
|---|---|
| 1 Kilogram·Meter Squared | 23.73036 Pound·Foot Squared |
| 1 Gram·Centimeter Squared | 0.0000001 Kilogram·Meter Squared |
| 1 Ounce·Inch Squared | 1,828.998 Gram·Centimeter Squared |
| 10 Pound·Foot Squared | 0.4214011 Kilogram·Meter Squared |
| 1000 Gram·Centimeter Squared | 0.5467475 Ounce·Inch Squared |
| 1 Pound·Foot Squared | 230.4 Ounce·Inch Squared |
Frequently asked questions
Moment of inertia is the rotational equivalent of mass in straight-line motion. Higher values mean more torque is needed to achieve the same angular acceleration.
The SI unit is kilogram meter squared, written as kg·m². Smaller rotating parts are often listed in g·cm².
Mass alone does not show how far material is from the axis. Moment of inertia includes both amount of mass and distribution of that mass.