Convert Slugs per cubic foot to Pounds per cubic foot
Convert Slugs per cubic foot (slug/ft³) to Pounds per cubic foot (lb/ft³) instantly and accurately.
Conversion Formula
lb/ft³ = slug/ft³ × 32.17404856
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 Pounds per cubic foot
The pound per cubic foot (lb/ft³) equals ≈16.018 kg/m³, widely used in US construction, soil mechanics, and insulation specifications. Softwood framing lumber averages 25-35 lb/ft³; compacted soil 90-130 lb/ft³; fresh water ≈62.43 lb/ft³; concrete 145-150 lb/ft³. ASTM standards for concrete, soil, and geotextiles routinely cite lb/ft³. 1 lb/ft³ = 0.45359237/0.028316846592 kg/m³ ≈16.018 kg/m³.
Quick Reference Table
| Slugs per cubic foot (slug/ft³) | Pounds per cubic foot (lb/ft³) |
|---|---|
| 1 slug/ft³ | 32.174 lb/ft³ |
| 2 slug/ft³ | 64.3481 lb/ft³ |
| 5 slug/ft³ | 160.87 lb/ft³ |
| 10 slug/ft³ | 321.74 lb/ft³ |
| 25 slug/ft³ | 804.351 lb/ft³ |
| 50 slug/ft³ | 1608.7 lb/ft³ |
| 100 slug/ft³ | 3217.4 lb/ft³ |