Convert Tonne square metres to Kilogram square metres
Convert Tonne square metres (t·m²) to Kilogram square metres (kg·m²) instantly and accurately.
Conversion Formula
kg·m² = t·m² × 1000
About Tonne square metres
The tonne square metre (t·m²) equals 1000 kg·m², used for large industrial rotors and heavy rotating machinery. A 60-tonne paper-machine calendar roll of 0.5 m radius has I ≈7.5 t·m²; synchronous hydro-generator rotors: 50-2000 t·m²; large marine propulsion shafts: 5-50 t·m². 1 t·m² = 1000 kg·m² ≈737.6 slug·ft² ≈23 730 lb·ft².
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.
Quick Reference Table
| Tonne square metres (t·m²) | Kilogram square metres (kg·m²) |
|---|---|
| 1 t·m² | 1000 kg·m² |
| 2 t·m² | 2000 kg·m² |
| 5 t·m² | 5000 kg·m² |
| 10 t·m² | 10000 kg·m² |
| 25 t·m² | 25000 kg·m² |
| 50 t·m² | 50000 kg·m² |
| 100 t·m² | 100000 kg·m² |