Density converter

Convert between any two density units. The SI base is kg/m³; water at 4 °C has a density of exactly 1000 kg/m³ = 1 g/cm³ = 1 g/ml.

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Reference densities

Water (4 °C): 1000 kg/m³ = 1.000 g/cm³
Air (sea level): 1.225 kg/m³
Aluminium: 2700 kg/m³
Iron: 7874 kg/m³
Gold: 19 320 kg/m³

FAQ

What is specific gravity?

Specific gravity is density relative to water (at 4 °C). A specific gravity of 1.5 means 1500 kg/m³ — denser than water by a factor of 1.5.

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