Convert Slugs per cubic foot to Kilograms per cubic metre
Convert Slugs per cubic foot (slug/ft³) to Kilograms per cubic metre (kg/m³) instantly and accurately.
Conversion Formula
kg/m³ = slug/ft³ × 515.3788184
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.
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
| Slugs per cubic foot (slug/ft³) | Kilograms per cubic metre (kg/m³) |
|---|---|
| 1 slug/ft³ | 515.379 kg/m³ |
| 2 slug/ft³ | 1030.76 kg/m³ |
| 5 slug/ft³ | 2576.89 kg/m³ |
| 10 slug/ft³ | 5153.79 kg/m³ |
| 25 slug/ft³ | 12884.5 kg/m³ |
| 50 slug/ft³ | 25768.9 kg/m³ |
| 100 slug/ft³ | 51537.9 kg/m³ |