The Density Calculator finds density, volume or mass from the other two values in many units.
| Density | 1000 kg/m³ |
| 1 g/cm³ | |
| 62.427962 lb/ft³ |
Density is mass per unit volume: ρ = m ÷ V. It tells you how tightly matter is packed. Water has a density of about 1,000 kg/m³ (1 g/cm³); objects denser than water sink in it, less dense ones float.
Worked example (defaults): 1,000 kg in 1 m³ has a density of 1,000 kg/m³, the density of water.
Air ≈ 1.2 kg/m³, wood 400–900, ice 917, water 1,000, aluminium 2,700, steel about 7,850, copper 8,960, lead 11,340, gold 19,300.
Density helps identify materials, calculate shipping weights, design boats and aircraft, mix concrete and measure fluids. Specific gravity is density relative to water.
Does density change with temperature? Yes, most substances expand when heated.
What is the densest element? Osmium, about 22,590 kg/m³.
How do I find volume of an irregular object? Water displacement.