Density Calculator

Solve density, mass, or volume from the other two, with common unit options for everyday and lab use. Calculates in your browser.

Enter any two values, the third is calculated.

Mass-
Volume-
Density-

Show the math

Density is mass per unit volume:

ρ = m ÷ V

For reference, water is about 1 g/cm³ and aluminium about 2.7 g/cm³. All math runs in your browser.

What this does

A density calculator solves density, mass, or volume from the other two, with common unit options for everyday and lab use.

How to use it

  1. Enter any two of density, mass, volume.
  2. Pick matching units.
  3. Read the third quantity.
  4. Switch units to compare.

How it works

Density is mass divided by volume. Any consistent unit set works — grams and cm³ give g/cm³, kilograms and m³ give kg/m³.

ρ = m ÷ V

Understanding your result

Density links mass and volume, so the practical uses are identifying a material or converting between weight and volume for a known substance. Any consistent unit set works, but density shifts with temperature (and, for gases, pressure), so a value measured warm will differ from one measured cold, which matters for precise lab or engineering work.

Example

200 g in 250 cm³ is a density of 0.8 g/cm³.

Sources & methodology

Last updated .

Frequently asked questions

What is the density formula?

Density is mass divided by volume: ρ = m ÷ V. Rearranged, mass = ρ × V and volume = m ÷ ρ.

What units should I use?

Any consistent set works — grams and cm³ give g/cm³, kilograms and m³ give kg/m³. Keep mass and volume in matching systems.

Is my data stored?

No. Everything is calculated locally in your browser.