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This calculator applies the density relationship. Enter values in the stated units and review the result. Check assumptions and use appropriate professional guidance for safety-critical decisions.Keep exploring
Density is how much mass fits into a given volume:
Density (kg/m³) = mass (kg) ÷ volume (m³)
Enter the mass in kilograms and the volume in cubic metres. If you measure in grams and cubic centimetres, the result in g/cm³ × 1,000 = kg/m³.
Worked example: identifying a metal block
A block measures 10 cm × 10 cm × 10 cm = 1,000 cm³ = 0.001 m³
It weighs 2.7 kg
Density: 2.7 ÷ 0.001 = 2,700 kg/m³, which matches aluminium
Densities of common materials
Material
Density (kg/m³)
Water (4 °C)
1,000
Seawater
about 1,025
Ice
about 917
Pine timber (dry)
450 – 550
Hardwood (dry)
650 – 1,100
Concrete
about 2,400
Aluminium
2,700
Steel
7,850
Copper
8,960
Gold
19,300
Measuring the volume of an odd shape
Use water displacement: submerge the object in a measuring container and read the rise in water level. A rise of 250 mL means a volume of 250 cm³ = 0.00025 m³.
Why density matters
Floating: anything less dense than water (1,000 kg/m³) floats, like ice and most timber.
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