Convert Pounds per cubic inch to Kilograms per cubic metre
Convert Pounds per cubic inch (lb/in³) to Kilograms per cubic metre (kg/m³) instantly and accurately.
Conversion Formula
kg/m³ = lb/in³ × 27679.90471
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 Kilograms per cubic metre
The kilogram per cubic metre (kg/m³) is the SI coherent derived unit of density. Air at standard sea level is ≈1.225 kg/m³; fresh water at 4°C is ≈999.97 kg/m³; liquid mercury is 13 534 kg/m³; osmium (densest stable element) is 22 590 kg/m³. Used in the continuity equation, Bernoulli's principle, and all SI-based fluid dynamics calculations. 1 kg/m³ = 1 g/L ≈0.06243 lb/ft³.
Quick Reference Table
| Pounds per cubic inch (lb/in³) | Kilograms per cubic metre (kg/m³) |
|---|---|
| 1 lb/in³ | 27679.9 kg/m³ |
| 2 lb/in³ | 55359.8 kg/m³ |
| 5 lb/in³ | 138400 kg/m³ |
| 10 lb/in³ | 276799 kg/m³ |
| 25 lb/in³ | 691998 kg/m³ |
| 50 lb/in³ | 1384000 kg/m³ |
| 100 lb/in³ | 2767990 kg/m³ |