Enter any two of mass, volume and density, leaving the third blank, to solve for the missing value using Density = Mass ÷ Volume.
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Density is mass divided by volume: ρ = m ÷ V. This calculator rearranges the formula depending on which field you leave blank, solving for mass (volume × density), volume (mass ÷ density), or density (mass ÷ volume). Note that 1 g/cm³ equals 1 kg/L, so results can be scaled to other common unit systems by the same ratio.
You have a metal sample weighing 474 g and know it's iron (density about 7.9 g/cm³), but you don't have a way to directly measure its volume. Entering mass 474 and density 7.9, leaving volume blank, solves volume = 474 ÷ 7.9 = 60 cm³, letting you back into volume for an irregular solid shape you couldn't otherwise measure directly (for instance by comparing it to how much water it would displace).
Mixing unit systems within one calculation, like entering mass in kilograms but volume in cm³, the calculator has no way to detect this, it just divides the numbers you enter, so inconsistent units silently produce a meaningless result rather than an error.
Leaving more than one field blank, or filling in all three, the calculator needs exactly two known values to solve for the third, it can't solve with only one value given, and it can't tell which field to solve for if none are left blank.
Assuming density is a fixed property regardless of temperature or state, most materials expand slightly when heated (lowering density) and contract when cooled, a density figure looked up at one temperature may not exactly match a measurement taken at a different one.
Yes, as long as you keep your units consistent (grams with cm³, or kilograms with liters, since both pairs give the same numeric density ratio). Just remember the result will be labeled in this calculator's default units.
By definition, one gram was originally set as the mass of one cubic centimeter of water at 4°C, which is why water's density conveniently works out to almost exactly 1 g/cm³.
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