Convert Slug square inches to Tonne square metres
Convert Slug square inches (slug·in²) to Tonne square metres (t·m²) instantly and accurately.
Conversion Formula
t·m² = slug·in² × 9.415402419e-6
About Slug square inches
The slug square inch (slug·in²) equals ≈9.415 × 10⁻³ kg·m², used in US aerospace guidance and flight mechanics. Pre-metric inertial navigation unit (INU) test reports and NACA stability-derivative tables listed gyroscope platform inertia in slug·in²; US autopilot servo actuator sizing also uses slug·in². 1 slug·in² ≈9.415 × 10⁻³ kg·m² ≈32.17 lb·in².
About Tonne square metres
The tonne square metre (t·m²) equals 1000 kg·m², used for large industrial rotors and heavy rotating machinery. A 60-tonne paper-machine calendar roll of 0.5 m radius has I ≈7.5 t·m²; synchronous hydro-generator rotors: 50-2000 t·m²; large marine propulsion shafts: 5-50 t·m². 1 t·m² = 1000 kg·m² ≈737.6 slug·ft² ≈23 730 lb·ft².
Quick Reference Table
| Slug square inches (slug·in²) | Tonne square metres (t·m²) |
|---|---|
| 1 slug·in² | 9.415 × 10-6 t·m² |
| 2 slug·in² | 1.883 × 10-5 t·m² |
| 5 slug·in² | 4.708 × 10-5 t·m² |
| 10 slug·in² | 9.415 × 10-5 t·m² |
| 25 slug·in² | 0.000235385 t·m² |
| 50 slug·in² | 0.00047077 t·m² |
| 100 slug·in² | 0.00094154 t·m² |