Moment of Inertia Converter
Moment of inertia measures how strongly an object resists changes to its rotation. It depends on both the mass and how far that mass sits from the axis, so the same mass spread further out has a larger moment of inertia. The SI unit is the kilogram square metre (kg·m²).
1 Kilogram-Meter² = 23.7303604 Pound-Square Foot
How to convert Kilogram-Meter² to Pound-Square Foot
One Kilogram-Meter² equals 23.7303604 Pound-Square Foot, so multiply any value in kg·m² by 23.7303604 to get lb·ft². To convert back, divide by 23.7303604 — or multiply by 0.04214011009.
lb·ft² = kg·m² × 23.7303604
Example: 25 kg·m² × 23.7303604 = 593.2590101 lb·ft².
Kilogram-Meter² to Pound-Square Foot table
| Kilogram-Meter² (kg·m²) | Pound-Square Foot (lb·ft²) |
|---|---|
| 1 | 23.7303604 |
| 2 | 47.46072081 |
| 3 | 71.19108121 |
| 4 | 94.92144162 |
| 5 | 118.651802 |
| 10 | 237.303604 |
| 15 | 355.9554061 |
| 20 | 474.6072081 |
| 25 | 593.2590101 |
| 50 | 1,186.51802 |
| 75 | 1,779.77703 |
| 100 | 2,373.03604 |
| 250 | 5,932.590101 |
| 500 | 11,865.1802 |
| 1,000 | 23,730.3604 |
Pound-Square Foot to Kilogram-Meter² table
| Pound-Square Foot (lb·ft²) | Kilogram-Meter² (kg·m²) |
|---|---|
| 1 | 0.04214011009 |
| 2 | 0.08428022019 |
| 3 | 0.1264203303 |
| 4 | 0.1685604404 |
| 5 | 0.2107005505 |
| 10 | 0.4214011009 |
| 15 | 0.6321016514 |
| 20 | 0.8428022019 |
| 25 | 1.053502752 |
| 50 | 2.107005505 |
| 75 | 3.160508257 |
| 100 | 4.214011009 |
| 250 | 10.53502752 |
| 500 | 21.07005505 |
| 1,000 | 42.14011009 |
Moment of Inertia units at a glance
All 8 units this converter supports, each expressed in Kilogram-Meter² (kg·m²) and the other way round.
| Unit | Symbol | 1 unit in kg·m² | 1 kg·m² in unit |
|---|---|---|---|
| Kilogram-Meter² | kg·m² | 1 | 1 |
| Kilogram-Centimeter² | kg·cm² | 0.0001 | 10,000 |
| Gram-Centimeter² | g·cm² | 1e-7 | 10,000,000 |
| Kilogram-Millimeter² | kg·mm² | 0.000001 | 1,000,000 |
| Pound-Square Foot | lb·ft² | 0.04214011009 | 23.7303604 |
| Pound-Square Inch | lb·in² | 0.0002926396534 | 3,417.171898 |
| Ounce-Square Inch | oz·in² | 0.00001828997834 | 54,674.75037 |
| Slug-Square Foot | slug·ft² | 1.355817948 | 0.7375621493 |
Where moment of inertia conversions are used
Flywheel and rotor design, vehicle dynamics, robotics, and structural analysis.
Frequently asked questions
What is 1 Kilogram-Meter² in Pound-Square Foot?
1 Kilogram-Meter² (kg·m²) is 23.7303604 Pound-Square Foot (lb·ft²).
What is 1 Pound-Square Foot in Kilogram-Meter²?
1 Pound-Square Foot (lb·ft²) is 0.04214011009 Kilogram-Meter² (kg·m²).
How do I convert Kilogram-Meter² to Pound-Square Foot?
Multiply the value in Kilogram-Meter² by 23.7303604. For example, 5 kg·m² × 23.7303604 = 118.651802 lb·ft². To go the other way, divide by 23.7303604.
How many units does the moment of inertia converter support?
It converts between 8 units: Kilogram-Meter², Kilogram-Centimeter², Gram-Centimeter², Kilogram-Millimeter², Pound-Square Foot, Pound-Square Inch, Ounce-Square Inch, Slug-Square Foot.
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.