Convert Pounds per cubic inch to Tonnes per cubic metre
Convert Pounds per cubic inch (lb/in³) to Tonnes per cubic metre (t/m³) instantly and accurately.
Conversion Formula
t/m³ = lb/in³ × 27.67990471
About Pounds per cubic inch
The pound per cubic inch (lb/in³) equals ≈27 679.9 kg/m³, the standard US customary unit for engineering material density. Mechanical engineering handbooks list metals in lb/in³: steel 0.284, aluminium 0.098, copper 0.324, tungsten 0.697, lead 0.410. FEA software (ANSYS, Nastran) configured with US unit sets reads material density as lb/in³. 1 lb/in³ = 1728 lb/ft³ = 16 oz/in³ ≈27 679.9 kg/m³.
About Tonnes per cubic metre
The tonne per cubic metre (t/m³) equals 1000 kg/m³, coincident with g/cm³ and kg/L. Geotechnical engineering specifies bulk unit weights in t/m³: saturated clay 1.8-2.2 t/m³, dry sand 1.4-1.7 t/m³, reinforced concrete 2.4-2.5 t/m³. Bulk-material handling uses t/m³ for conveyor and silo capacity calculations, yielding mass in tonnes directly from volume in m³. 1 t/m³ = 1000 kg/m³ = 1 g/cm³.
Quick Reference Table
| Pounds per cubic inch (lb/in³) | Tonnes per cubic metre (t/m³) |
|---|---|
| 1 lb/in³ | 27.6799 t/m³ |
| 2 lb/in³ | 55.3598 t/m³ |
| 5 lb/in³ | 138.4 t/m³ |
| 10 lb/in³ | 276.799 t/m³ |
| 25 lb/in³ | 691.998 t/m³ |
| 50 lb/in³ | 1384 t/m³ |
| 100 lb/in³ | 2767.99 t/m³ |