This density calculator works with the relationship that density equals mass divided by volume, and solves it for whichever of the three quantities you do not know. Density describes how tightly matter is packed, the amount of mass contained in a given volume, and it explains a lot of everyday behaviour. Water has a density of about 1 gram per cubic centimetre, so anything denser sinks and anything lighter floats, which is why ice floats, oil sits on water and a steel hull can still stay afloat by enclosing air. You choose what to solve for, the density, the mass or the volume, then enter the other two values. To find density it divides the mass by the volume; to find the mass it multiplies density by volume; and to find the volume it divides the mass by the density. Any consistent units work: grams with cubic centimetres give a density in grams per cubic centimetre, which is the same as grams per millilitre, while kilograms with cubic metres give kilograms per cubic metre. Density is used across science, engineering, shipping and trades, from identifying materials and checking purity to working out whether something will float and how much a volume of material will weigh. Enter your two known values to see the result straight away.
Use consistent units. Grams and cubic centimetres give g/cm³, the same as g/mL. Estimate only.
The calculator uses density equals mass over volume. To find density it divides mass by volume, to find mass it multiplies density by volume, and to find volume it divides mass by density. The value you are solving for is hidden so you only enter the two you know.
An object with a mass of 100 grams and a volume of 50 cubic centimetres has a density of 100 over 50, which is 2 grams per cubic centimetre, so it would sink in water.
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