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.

Slugs per cubic foot (slug/ft³)
Kilograms per cubic metre (kg/m³)

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/ft³515.379 kg/m³
2 slug/ft³1030.76 kg/m³
5 slug/ft³2576.89 kg/m³
10 slug/ft³5153.79 kg/m³
25 slug/ft³12884.5 kg/m³
50 slug/ft³25768.9 kg/m³
100 slug/ft³51537.9 kg/m³

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