Convert Kilogram square metres to Pound square feet
Convert Kilogram square metres (kg·m²) to Pound square feet (lb·ft²) instantly and accurately.
Conversion Formula
lb·ft² = kg·m² × 23.7303604
About Kilogram square metres
The kilogram square metre (kg·m²) is the SI coherent derived unit of moment of inertia. It defines the rotational analogue of mass in Newton's second law: τ = Iα (torque in N·m, angular acceleration in rad/s²). A solid disc of 10 kg and 0.5 m radius has I = 1.25 kg·m². Electric motor rotors: 0.001-10 kg·m². Wind turbine rotors: 10⁶-10⁸ kg·m². 1 kg·m² = 10 000 kg·cm² ≈0.7376 slug·ft².
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.
Quick Reference Table
| Kilogram square metres (kg·m²) | Pound square feet (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 |
| 25 kg·m² | 593.259 lb·ft² |
| 50 kg·m² | 1186.52 lb·ft² |
| 100 kg·m² | 2373.04 lb·ft² |