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Calculators / Science / Density
Density calculator
Solve for density, mass, or volume with common metric units.
On this page
What is density in physics?
Density is mass per unit volume. The formula is density = mass ÷ volume, commonly expressed in kilograms per cubic metre (kg/m³) or grams per cubic centimetre (g/cm³).
Density5KG/m³
Calculator controls
How to calculate
Solve for density, mass, or volume with common metric units.
Density = mass ÷ volume; mass = density × volume; volume = mass ÷ density.
Worked example
Solve for: density; Mass: 10; Mass unit: kg; Volume: 2; Volume unit: m3; Density: 5; Density unit: kgm3.
Density: 5 kg/m³.
Assumptions and limits
Assumes uniform bulk density. Temperature, pressure, porosity, and material composition can affect measured density.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Density expresses mass per unit volume. The result is in kilograms per cubic metre when the shown input units are used.
When this tool is useful
Compare a measured mass and volume with an expected material density.
Understanding your inputs
| Input | What to enter |
|---|---|
| Solve for | Enter one of the available options. |
| Mass | Enter a number of at least 0 and no more than 1000000000000. |
| Mass unit | Enter one of the available options. |
| Volume | Enter a number of at least 0.000001 and no more than 1000000000000. |
| Volume unit | Enter one of the available options. |
| Density | Enter a number of at least 0 and no more than 1000000000000. |
| Density unit | Enter one of the available options. |
Frequently asked questions
Can the volume be zero?
No. Density divides by volume, so volume must be positive.
Does temperature affect density?
Often yes. Expansion or contraction changes volume. Compare measurements made under suitable, consistent conditions.