Convert Pounds per cubic foot to Kilograms per cubic metre
Convert Pounds per cubic foot (lb/ft³) to Kilograms per cubic metre (kg/m³) instantly and accurately.
Conversion Formula
kg/m³ = lb/ft³ × 16.01846337
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.
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 foot (lb/ft³) | Kilograms per cubic metre (kg/m³) |
|---|---|
| 1 lb/ft³ | 16.0185 kg/m³ |
| 2 lb/ft³ | 32.0369 kg/m³ |
| 5 lb/ft³ | 80.0923 kg/m³ |
| 10 lb/ft³ | 160.185 kg/m³ |
| 25 lb/ft³ | 400.462 kg/m³ |
| 50 lb/ft³ | 800.923 kg/m³ |
| 100 lb/ft³ | 1601.85 kg/m³ |