Convert Ounce square inches to Kilogram square millimetres
Convert Ounce square inches (oz·in²) to Kilogram square millimetres (kg·mm²) instantly and accurately.
Conversion Formula
kg·mm² = oz·in² × 18.28997834
About Ounce square inches
The ounce square inch (oz·in²) equals ≈1.829 × 10⁻⁵ kg·m², used in US precision instrument engineering for light rotating components. Pre-metric American gyroscope gimbal assemblies and US MIL-SPEC instrument servo actuators cited inertia in oz·in²; NACA gyroscope test reports use oz·in² for small rotating elements. 1 oz·in² ≈1.829 × 10⁻⁵ kg·m² = 16 oz·in² per lb·in².
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
| Ounce square inches (oz·in²) | Kilogram square millimetres (kg·mm²) |
|---|---|
| 1 oz·in² | 18.29 kg·mm² |
| 2 oz·in² | 36.58 kg·mm² |
| 5 oz·in² | 91.4499 kg·mm² |
| 10 oz·in² | 182.9 kg·mm² |
| 25 oz·in² | 457.249 kg·mm² |
| 50 oz·in² | 914.499 kg·mm² |
| 100 oz·in² | 1829 kg·mm² |