How to Calculate Density
What is Density?
Density is the mass of a substance per unit volume (ρ = m/V). It determines whether objects float or sink, is used in material identification, and underpins buoyancy and fluid dynamics.
Step-by-Step Guide
- 1Density (ρ) = mass / volume
- 2Mass = density × volume
- 3Volume = mass / density
- 4Objects float in a fluid if their density is less than the fluid's density
Worked Examples
Input
Mass=500g, V=250cm³
Result
ρ = 2.0 g/cm³
About the density of aluminium
Input
Gold: ρ=19.3, V=5cm³
Result
mass = 96.5g
Roughly 3.4 oz troy
Ready to calculate? Try the free Density Calculator
Try it yourself →