Convert Pound square feet to Ounce square inches
Convert Pound square feet (lb·ft²) to Ounce square inches (oz·in²) instantly and accurately.
Conversion Formula
oz·in² = lb·ft² × 2304
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.
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
| Pound square feet (lb·ft²) | Ounce square inches (oz·in²) |
|---|---|
| 1 lb·ft² | 2304 oz·in² |
| 2 lb·ft² | 4608 oz·in² |
| 5 lb·ft² | 11520 oz·in² |
| 10 lb·ft² | 23040 oz·in² |
| 25 lb·ft² | 57600 oz·in² |
| 50 lb·ft² | 115200 oz·in² |
| 100 lb·ft² | 230400 oz·in² |