Popular moment of inertia conversions
- Kilogram square meters to pound square feet1 kg⋅m² = 23.7304 lb⋅ft²
- Kilogram square meters to slug square feet1 kg⋅m² = 0.737562 slug⋅ft²
- Pound square feet to kilogram square meters1 lb⋅ft² = 0.0421401 kg⋅m²
- Pound square feet to slug square feet1 lb⋅ft² = 0.031081 slug⋅ft²
- Slug square feet to kilogram square meters1 slug⋅ft² = 1.35582 kg⋅m²
- Slug square feet to pound square feet1 slug⋅ft² = 32.174 lb⋅ft²
About moment of inertia units
The (mass) moment of inertia measures how hard it is to change an object’s rotation about an axis — the rotational analogue of mass. Its units are mass times length squared.
Moment of Inertia unit reference
| Unit | Symbol | Value in kg⋅m² | System |
|---|---|---|---|
| Kilogram square meter | kg⋅m² | 1 kg⋅m² | SI |
| Kilogram square centimeter | kg⋅cm² | 0.0001 kg⋅m² | SI |
| Kilogram square millimeter | kg⋅mm² | 0.000001 kg⋅m² | SI |
| Gram square centimeter | g⋅cm² | 1×10⁻⁷ kg⋅m² | CGS |
| Pound square foot | lb⋅ft² | 0.04214011 kg⋅m² | US customary |
| Pound square inch | lb⋅in² | 0.00029263965 kg⋅m² | US customary |
| Ounce square inch | oz⋅in² | 0.000018289978 kg⋅m² | US customary |
| Slug square foot | slug⋅ft² | 1.3558179 kg⋅m² | US customary |
Frequently asked questions
What is the SI unit of moment of inertia?
This converter uses the kilogram square meter (kg⋅m²) as its reference unit; every other unit is defined relative to it.
How many moment of inertia units can I convert?
8 units are supported here, across SI, CGS, US customary systems. Every pair can be converted in both directions.
Does this moment of inertia converter work offline?
Yes. Once the page has loaded, every calculation runs locally in your browser — nothing is sent to a server.