Convert Gram square millimetres to Ounce square inches
Convert Gram square millimetres (g·mm²) to Ounce square inches (oz·in²) instantly and accurately.
Conversion Formula
oz·in² = g·mm² × 5.467475037e-5
About Gram square millimetres
The gram square millimetre (g·mm²) equals 10⁻⁹ kg·m², the natural unit for MEMS gyroscope resonators and micro-fabricated spinning structures. CubeSat reaction wheel rotors range 1-50 g·mm²; chip-scale IMU proof masses sit below 1 g·mm². Watchmaking balance wheels and miniature turbine blades also fall in this range. 1 g·mm² = 10⁻⁹ kg·m² = 0.01 g·cm².
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.
Quick Reference Table
| Gram square millimetres (g·mm²) | Ounce square inches (oz·in²) |
|---|---|
| 1 g·mm² | 5.467 × 10-5 oz·in² |
| 2 g·mm² | 0.00010935 oz·in² |
| 5 g·mm² | 0.000273374 oz·in² |
| 10 g·mm² | 0.000546748 oz·in² |
| 25 g·mm² | 0.00136687 oz·in² |
| 50 g·mm² | 0.00273374 oz·in² |
| 100 g·mm² | 0.00546748 oz·in² |