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# How do you convert milligrams to milliliters?

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In order to convert milligrams to milliliters, one must know the density of the substance; if the density is measured in milligrams per milliliter, the milligrams of mass of the object being measured are divided by the density of the substance to determine the volume in millimeters. Because density is generally not listed in milligrams per milliliter, it is likely that some calculations must be done to convert the density into the appropriate units.

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Credit: Horia Varlan CC-BY 2.0

To convert 1,000 milligrams of milk into millileters, one must first determine the density of the milk, which is 1.03 grams per cubic centimeter. A simple mathematical conversion indicates that this density is equivalent to 1,030 milligrams per millileter because there are 1,000 milligrams in a gram and a cubic centimeter is equal to a millimeter. Dividing the 1,000 milligrams of mass by the density of 1,030 milligrams per millileter results in a volume of 0.97 millilters.

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## Related Questions

• A:

Density and mass are mutually dependent physical properties, with density being equal to the amount of mass per unit of volume of any particular object or substance. The mass of any object depends entirely on its overall density, with denser objects having greater mass, for the same volume, than less-dense objects. The mass of an object with uniform composition changes if pieces are added or removed, but its density remains constant. Meanwhile, barring any melting or evaporation, the density of an object tends to change with changes in temperature, while the mass remains the same.

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• A:

To convert milligrams (mg) to milliliters (ml), the number of milligrams must be multiplied by the density of the liquid, which equals the volume in liters,and then divided by 1,000 to convert liters to milliliters. The density of each liquid is unique.

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• A:

Since milliliters measure volume and milligrams measure mass, it is necessary to know the density of the substance to convert between the two. The formula mass equals volume times density calculates the conversion.