Pound square feet to kilogram square meters
Type a value in lb·ft² to get it in kg·m² instantly.
0.04214kg·m²
That's 35× as hard to spin as a frisbee, while a bicycle wheel is 3.3× harder. Spun at 100 rad/s it would store about 210.7 J.
Convert the other way: kg·m² to lb·ft²
What it means
How hard is that to spin?
Moment of inertia depends on where the mass sits, not just how much there is. The same wheel about a different axis gives a different number.
The math
How to convert lb·ft² to kg·m²
To convert pound square feet to kilogram square meters, multiply by 0.0421401.
Example: 1 lb·ft² × 0.0421401 = 0.0421401 kg·m².
In the other direction, 1 kg·m² = 23.7304 lb·ft².
Every unit
Your moment of inertia in every unit
Tables
lb·ft² to kg·m² conversion table
| lb·ft² | kg·m² |
|---|---|
| 0.001 lb·ft² | 4.214×10⁻⁵ kg·m² |
| 0.01 lb·ft² | 0.000421401 kg·m² |
| 0.05 lb·ft² | 0.00210701 kg·m² |
| 0.1 lb·ft² | 0.00421401 kg·m² |
| 0.5 lb·ft² | 0.0210701 kg·m² |
| 1 lb·ft² | 0.0421401 kg·m² |
| 2 lb·ft² | 0.0842802 kg·m² |
| 5 lb·ft² | 0.210701 kg·m² |
| 10 lb·ft² | 0.421401 kg·m² |
| 50 lb·ft² | 2.10701 kg·m² |
| 100 lb·ft² | 4.21401 kg·m² |
kg·m² to lb·ft² conversion table
| kg·m² | lb·ft² |
|---|---|
| 0.001 kg·m² | 0.0237304 lb·ft² |
| 0.01 kg·m² | 0.237304 lb·ft² |
| 0.05 kg·m² | 1.18652 lb·ft² |
| 0.1 kg·m² | 2.37304 lb·ft² |
| 0.5 kg·m² | 11.8652 lb·ft² |
| 1 kg·m² | 23.7304 lb·ft² |
| 2 kg·m² | 47.4607 lb·ft² |
| 5 kg·m² | 118.652 lb·ft² |
| 10 kg·m² | 237.304 lb·ft² |
| 50 kg·m² | 1,186.52 lb·ft² |
| 100 kg·m² | 2,373.04 lb·ft² |
Quick answers
Quick answers
- How many kg·m² is 1 lb·ft²?
- 1 lb·ft² is 0.0421401 kg·m².
- How many kg·m² is 10 lb·ft²?
- 10 lb·ft² is 0.421401 kg·m².
The units
About these units
Pound square feet (lb·ft²)
The US engineering form, about 0.0421 kg·m².
Kilogram square meters (kg·m²)
The SI unit of rotational inertia.
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