Mass, density and volume are mathematically related. If you have two of the terms, you can use them to calculate the third. These three functions are used to describe an object. These formulas also are used to calculate planets and objects in space. Every object that has mass will also have a density and volume. The formula to calculate these three terms is a simple division or multiplication formula. The results can then be used to calculate weight.

Calculate volume from the mass and density values. Volume is defined as mass per density unit. To calculate the volume of an object, use the following formula: volume = mass/density If the mass of the object is 5 kilograms and the density is 10 kilogram/meter^3, the formula is below: volume = 5/10 = .5 meters^3

Calculate density from volume and mass. Density is a common calculation for chemistry, physics and biology students. The density formula is below: density = mass/volume Taking the numbers from step one, if the volume is .5 meters^3 and the mass is 5 grams, the calculation is below: density = 5/.5 = 10 kilogram/meter^3

Calculate the mass from the density and volume. Mass is equal to the density times the volume. The formula is below: mass = volume * density If the volume of an object is .5 meters^3 and the density is 10 kilogram/meter^s, the calculation is below: mass = .5 * 10 = 5 kilograms

#### Tip

The ^ symbol is used to indicate "raised to," so when a formula reads n^3, it is that number "n" cubed or raised to the third power (n_n_n).