Density

The density calculator finds the density of a substance from mass and volume, and the mass or volume of a body from its density. If the density matches a known substance, the calculator tells you which one it may be.

Formulas

ρ = m / V,   m = ρ · V,   V = m / ρ

Density is the mass per unit volume. The SI unit is kg/m³; g/cm³ is also common: 1 g/cm³ = 1000 kg/m³. Also 1 L = 1 dm³ = 0.001 m³ and 1 mL = 1 cm³.

Densities of some substances

Example 1. A 540 g block has a volume of 200 cm³: ρ = 0.54 kg / 0.0002 m³ = 2700 kg/m³ — aluminium.

Example 2. The mass of 5 L of water: m = 1000 kg/m³ · 0.005 m³ = 5 kg.