Density Calculator

Calculate density, mass or volume with ρ = m ÷ V, in metric or US units.

Result

Enter your values and select Calculate to see the result.

Runs in your browser — nothing you enter is sent to a server.

How the Density Calculator works

Density is how much mass fits in a volume. Choose what to find — density, mass or volume — enter the other two with their units, and the result is shown in g/cm³, kg/m³ and lb/ft³, with whether the material would float or sink in water (1 g/cm³).

Formula

ρ = m ÷ V

Rearranged: m = ρ × V and V = m ÷ ρ. 1 g/cm³ = 1,000 kg/m³.

Examples

500 g in 250 cm³

Density = 2 g/cm³ (2,000 kg/m³) — it sinks in water.

Gold

At 19.32 g/cm³, a 1 cm³ cube of gold weighs 19.32 g.

Frequently asked questions

What is specific gravity?

Density compared with water. In g/cm³ it's the same number: aluminium is 2.7.

Does temperature matter?

Yes, slightly — most materials expand when warm. Water is densest at about 4 °C.

Why does ice float?

Ice (about 0.917 g/cm³) is less dense than liquid water.

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