Convert Pound square feet to Kilogram square decimetres
Convert Pound square feet (lb·ft²) to Kilogram square decimetres (kg·dm²) instantly and accurately.
Conversion Formula
kg·dm² = lb·ft² × 4.214011009
About Pound square feet
The pound square foot (lb·ft²) equals ≈0.04214 kg·m², the dominant imperial unit for machine and vehicle rotational inertias. Aircraft control-surface counterbalancing, propeller blade inertia, and turbocharger rotor dynamics are specified in lb·ft²; steam turbine discs and helicopter tail-rotor assemblies: 1-10 000 lb·ft². 1 lb·ft² ≈0.04214 kg·m² = 144 lb·in² ≈0.03108 slug·ft².
About Kilogram square decimetres
The kilogram square decimetre (kg·dm²) equals 10⁻² kg·m², occasionally used in SI-metric flywheel and rotor analysis when the decimetre is a convenient length scale. Lathe chuck jaws, grinding wheel flanges, and small centrifuges fall in the 0.1-10 kg·dm² range. 1 kg·dm² = 10⁻² kg·m² = 100 kg·cm² = 10 g·m².
Quick Reference Table
| Pound square feet (lb·ft²) | Kilogram square decimetres (kg·dm²) |
|---|---|
| 1 lb·ft² | 4.21401 kg·dm² |
| 2 lb·ft² | 8.42802 kg·dm² |
| 5 lb·ft² | 21.0701 kg·dm² |
| 10 lb·ft² | 42.1401 kg·dm² |
| 25 lb·ft² | 105.35 kg·dm² |
| 50 lb·ft² | 210.701 kg·dm² |
| 100 lb·ft² | 421.401 kg·dm² |