Convert Kilogram square metres to Kilogram square millimetres
Convert Kilogram square metres (kg·m²) to Kilogram square millimetres (kg·mm²) instantly and accurately.
Conversion Formula
kg·mm² = kg·m² × 1000000
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 Kilogram square millimetres
The kilogram square millimetre (kg·mm²) equals 10⁻⁶ kg·m², widely used in CAD software and precision mechanical engineering. SolidWorks, CATIA, and Siemens NX report mass moment of inertia in kg·mm² for gear blanks, pulley hubs, and precision spindle assemblies. Industrial small servo motor rotors: 100-10 000 kg·mm². 1 kg·mm² = 10⁻⁶ kg·m² = 10 g·cm² = 0.01 kg·cm².
Quick Reference Table
| Kilogram square metres (kg·m²) | Kilogram square millimetres (kg·mm²) |
|---|---|
| 1 kg·m² | 1000000 kg·mm² |
| 2 kg·m² | 2000000 kg·mm² |
| 5 kg·m² | 5000000 kg·mm² |
| 10 kg·m² | 10000000 kg·mm² |
| 25 kg·m² | 25000000 kg·mm² |
| 50 kg·m² | 50000000 kg·mm² |
| 100 kg·m² | 100000000 kg·mm² |