Convert Pounds per cubic inch to Slugs per cubic foot
Convert Pounds per cubic inch (lb/in³) to Slugs per cubic foot (slug/ft³) instantly and accurately.
Conversion Formula
slug/ft³ = lb/in³ × 53.7078819
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 Slugs per cubic foot
The slug per cubic foot (slug/ft³) equals ≈515.379 kg/m³, used in US customary dynamics where forces are in pound-force. The US Standard Atmosphere gives sea-level air density as 2.377 × 10⁻³ slug/ft³; it appears in pre-SI aerospace textbooks (NACA technical notes) and compressible flow equations. 1 slug ≈14.594 kg. 1 slug/ft³ ≈515.379 kg/m³ ≈32.174 lb/ft³.
Quick Reference Table
| Pounds per cubic inch (lb/in³) | Slugs per cubic foot (slug/ft³) |
|---|---|
| 1 lb/in³ | 53.7079 slug/ft³ |
| 2 lb/in³ | 107.416 slug/ft³ |
| 5 lb/in³ | 268.539 slug/ft³ |
| 10 lb/in³ | 537.079 slug/ft³ |
| 25 lb/in³ | 1342.7 slug/ft³ |
| 50 lb/in³ | 2685.39 slug/ft³ |
| 100 lb/in³ | 5370.79 slug/ft³ |