Conversion Formula
$$\rho_{\text{kg/m³}} = \rho_{\text{lb/ft³}} \times 16.0185$$
Multiply lb/ft³ by 16.0185 to get kg/m³.
lb/ft³ to kg/m³ Conversion Table
| Pound per Cubic Foot (lb/ft³) | Kilogram per Cubic Meter (kg/m³) |
|---|---|
| 0.1 | 1.60185 |
| 0.5 | 8.00923 |
| 1 | 16.0185 |
| 2 | 32.0369 |
| 5 | 80.0923 |
| 10 | 160.185 |
| 25 | 400.462 |
| 50 | 800.923 |
| 100 | 1,601.85 |
| 250 | 4,004.62 |
| 500 | 8,009.23 |
| 1,000 | 16,018.5 |
lb/ft³ to kg/m³ in Engineering
Density conversions are critical for fluid mechanics, material selection, concrete mix design, and petroleum engineering. Specific gravity (relative to water at 4°C) is commonly used as a dimensionless density ratio across all disciplines.
Pound per Cubic Foot: Primary US density unit. Water = 62.4 lb/ft³. Used for soil, concrete, aggregate, and material densities.
Kilogram per Cubic Meter: SI unit of density. Water at 4°C has a density of approximately 1000 kg/m³.