Density Calculator
Calculate density, mass or volume from the other two – with common materials and conversions between kg/m³, g/cm³ and lb/ft³.
Find
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The formula
ρ = m / V: density is mass divided by volume. A steel block of 15.7 kg with a volume of 2 liters has a density of 7,850 kg/m³ (7.85 g/cm³) – the typical value for steel.
Densities of common materials
| Material | kg/m³ | g/cm³ |
|---|---|---|
| Air (20 °C) | 1.204 | 0.0012 |
| Pine wood, dry | about 500 | 0.5 |
| Gasoline | about 745 | 0.75 |
| Ice | 917 | 0.917 |
| Water (4 °C) | 1,000 | 1 |
| Concrete | about 2,400 | 2.4 |
| Aluminum | 2,700 | 2.7 |
| Steel | about 7,850 | 7.85 |
| Copper | 8,960 | 8.96 |
| Gold | 19,300 | 19.3 |
Will it float?
Anything less dense than water floats: ice (917 kg/m³) floats with about 92% under the surface, which is why most of an iceberg is hidden. Steel sinks, but a steel ship floats because its hull encloses so much air that its average density is below that of water.
Frequently asked questions
What is the density of water?
1,000 kg/m³ (1 g/cm³) at 4 °C; about 998 kg/m³ at room temperature.
How do I convert g/cm³ to kg/m³?
Multiply by 1,000: 7.85 g/cm³ = 7,850 kg/m³.