Density Calculator
Find the density of a substance from its mass and volume.
kg
m³
1 g/cm³
1 g/mL
Formula
Examples
| Input | Result |
|---|---|
| m = 1 kg, V = 0.001 m³ | density = 1000 kg/m³ = 1 g/cm³ |
About this calculator
Density is the amount of mass packed into a given volume: density = mass / volume. In SI units, mass is in kilograms and volume in cubic metres, giving density in kilograms per cubic metre (kg/m³). Dividing by 1000 converts to grams per cubic centimetre (g/cm³), which equals grams per millilitre.
Density is an intrinsic property of a material, independent of how much of it you have. For reference, pure water at 4 °C has a density of about 1000 kg/m³ (1 g/cm³). Objects denser than the fluid they sit in will sink, while less dense objects float — the principle behind buoyancy.
Frequently asked questions
Density equals mass divided by volume: ρ = m / V. With kilograms and cubic metres you get kg/m³.
Divide the density in kg/m³ by 1000. For instance, 1000 kg/m³ ÷ 1000 = 1 g/cm³.
Pure water at 4 °C has a density of about 1000 kg/m³, which is the same as 1 g/cm³ or 1 g/mL.
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