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Gold Weight Calculator

Use the gold weight calculator to determine the amount of precious metal you need and its cost for DIY projects.

Clear
Mass2.4125 kg19,300 kg/m³ × 0.000125 m³
Volume0.125 litres0.000125 m³ — from side³
Mass2.4125 kg
Density19,300 kg/m³19.3 g/cm³ — numerically the same as the specific gravity of a solid or liquid
Specific gravity19.3348relative to water at 20 °C — it sinks in water
Specific volume5.181e-5 m³/kgthe reciprocal of density
Weight on Earth23.6585 Ndensity is about mass, not weight — the same object has the same density on the Moon
Against balsa wood120.625×160 kg/m³
Against water19.3348×998 kg/m³
Against concrete8.0417×2,400 kg/m³
Against aluminium7.1481×2,700 kg/m³
Against steel2.4586×7,850 kg/m³
Against lead1.7019×11,340 kg/m³
Against gold1×19,300 kg/m³

The formula

ρ = m ÷ V

Density is intensive, weight is not

Density is mass per unit volume, and it is an intensive property: cutting an object in half leaves the density unchanged, because both mass and volume halve. That is what makes it useful for identifying a material regardless of how much of it you have.

It is also independent of gravity. An object taken to the Moon weighs a sixth as much but has exactly the same density, because neither its mass nor its volume changed. Confusing density with "heaviness" is the usual source of trouble here.

Specific gravity is density relative to water, so for solids and liquids it is numerically the same as density in g/cm³ — a happy coincidence of water being almost exactly 1 g/cm³. Anything above 1 sinks in water and anything below floats, with the submerged fraction equal to the ratio itself.

Note that density varies with temperature, and for gases with pressure too. Water is unusual in reaching maximum density at 4 °C rather than at its freezing point, which is why ice floats and why lakes freeze from the top down.