Density Calculator

Density describes how much mass is packed into a given volume. Enter any two of density, mass and volume to find the third.

g/cm³
Density
2.5 g/cm³
Mass
500 g
Volume
200 cm³

How it works

Density is simply mass divided by volume. Rearranging the same formula lets you solve for mass (density x volume) or volume (mass / density) instead.

Formula
Density = Mass / Volume | Mass = Density x Volume | Volume = Mass / Density

Example. 500 g of a substance occupying 200 cm³ has a density of 2.5 g/cm³ - close to the density of aluminum.

Frequently asked questions

What units should I use?

Any consistent set works - grams and cubic centimetres (g/cm³) is common for solids and liquids, and is numerically equal to kg/L. Just make sure mass and volume use compatible units before comparing your result to a reference table.

Why do some objects float and others sink?

An object floats in a fluid if its density is lower than the fluid's density, and sinks if it's higher - which is why wood (density < 1 g/cm³) floats on water (1 g/cm³) but a steel object (around 7.8 g/cm³) sinks.

Related calculators

Volume CalculatorCalculate the volume of any 3D shape: cube, rectangular box, cylinder, sphere or cone. Results in m³, cm³, litres and cubic feet.Molarity CalculatorCalculate the molarity of a solution from the mass of solute, its molar mass, and the solution volume. Instant, accurate result.Wind Chill / Heat Index CalculatorCalculate wind chill in cold, windy weather or heat index in hot, humid weather, using the official US National Weather Service formulas.Force CalculatorCalculate force, mass or acceleration using Newton's second law F = ma. Also shows weight in Newtons for the given mass.

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