Density calculator
Find density, mass or volume when you know the other two, with unit conversions and typical material densities.
About this calculator
Choose what to work out, enter the other two values in any unit, and the answer is converted into metric and imperial units.
A table of typical material densities is shown for comparison.
Measurements and terms explained
- Density
- Mass per unit of volume. Density = mass ÷ volume.
- Mass
- How much matter an object contains, measured in kilograms or pounds.
- Volume
- The space an object takes up, in cubic metres, litres or cubic feet.
- kg/m³
- Kilograms per cubic metre, the SI unit of density.
- g/cm³
- Grams per cubic centimetre. 1 g/cm³ equals 1,000 kg/m³.
Common questions
What is the density of water?
1,000 kg per cubic metre, or 1 g per cubic centimetre, at about 4 °C.
Why does ice float?
Ice is less dense than water, about 917 kg/m³.
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