Density Converter

Convert between various units of density (e.g., kg/m³, g/cm³, lb/ft³).

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Understanding Density

Density (ρ) is a measure of mass per unit volume. It indicates how much "stuff" is packed into a given space. The SI unit for density is kilograms per cubic meter (kg/m³).

Formula: Density (ρ) = Mass (m) / Volume (V)

Common Density Units & Approximate Values
Substance (approx.)Density (kg/m³)Density (g/cm³)
Air (at sea level)1.2250.001225
Water (at 4°C)10001
Aluminum27002.7
Iron78707.87
Lead1134011.34
Gold1932019.32