Convert Pound square feet to Slug square feet
Convert Pound square feet (lb·ft²) to Slug square feet (slug·ft²) instantly and accurately.
Conversion Formula
slug·ft² = lb·ft² × 0.03108095017
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 Slug square feet
The slug square foot (slug·ft²) equals ≈1.3558 kg·m², the fundamental moment of inertia unit in US customary aerodynamics and spacecraft attitude dynamics. Pre-SI spacecraft inertia tensors are tabulated in slug·ft² - NASA Apollo CSM principal moments ranged 12 000-90 000 slug·ft². USAF flight manuals and NACA stability reports use slug·ft². 1 slug·ft² ≈1.3558 kg·m² = 32.174 lb·ft².
Quick Reference Table
| Pound square feet (lb·ft²) | Slug square feet (slug·ft²) |
|---|---|
| 1 lb·ft² | 0.031081 slug·ft² |
| 2 lb·ft² | 0.0621619 slug·ft² |
| 5 lb·ft² | 0.155405 slug·ft² |
| 10 lb·ft² | 0.31081 slug·ft² |
| 25 lb·ft² | 0.777024 slug·ft² |
| 50 lb·ft² | 1.55405 slug·ft² |
| 100 lb·ft² | 3.1081 slug·ft² |