# How to Calculate the Mass of a Solid

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Mass is defined as how much matter comprises an object. Mass, despite its International System of Units measure of kilograms, is often confused with weight, which is the gravitational attraction between an object and the Earth. Mass is calculated as the product of an object's volume and density.

## Mass Calculation

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Fill a graduated cylinder with enough water so that the solid can be completely submerged later.

Measure the amount of water in the graduated cylinder.

Place the solid into the graduated cylinder.

Measure the amount of water in the graduated cylinder.

Subtract the value in Step 2 from Step 4. The difference is the solid's volume.

Determine the solid's density using the appropriate table found in the Resource section.

Multiply the solid's volume found in Step 5 by its density found in Step 6. The product is the solid's mass.