![]() You can see that seawater is slightly denser than pure water. The density of solids and liquids are usually stated in g/cm 3, while gases are usually in kg/m 3. The following chart allows you to compare the density of various materials under the same conditions of atmospheric pressure and temperature (unless stated otherwise). ![]() The different units can be confusing, but you should make certain you are consistent in which one you use. The conversion from English to metric units is: But note that pounds are weight and not mass and some confusion can occur with this designation. The English, Imperial or American units are either pounds per cubic feet (lb/ft 3) or pounds per cubic inch ( lb/in 3). The reason liters and milliliters are used in finding the density of liquids is that it is easy to measure the volume by pouring the liquid into a standard container. A milliliter is the volume a liquid and is equal to 1 cm 3.Ī liter is 1000 mL and this 1 L = 1000 cm 3. Liquids are often and kilograms per liter ( kg/L) or grams per milliliter ( g/mL). ![]() Since a quantity of water changes with temperature, 4° C, the point where water is the most contracted, was selected as the temperature of water for this measurement. It was defined that 1 cubic centimeter of water weighs 1 gram. The definitions of the sizes of a cubic centimeter and a gram were made such that the density of water in the metric system is equal to 1. Just divide the kg/m 3 value by 1000 to get the g/cm 3 value. Note that sometimes cm 3 is designated as cc for cubic centimeters.Ĭonversion kg/m 3 to g/cm 3 is as follows:įor example, if the density of Gold is 19,300 kg/m 3, a better way to state that density would be as 19.3 g/cm 3. When the density is large-such as the case with solids-metric units for density can be stated in grams per cubic centimeter ( g/cm 3). The International (SI) units for density are kilograms per cubic meter ( kg/m 3). The units used for density depend on which measurement system you are using. Under the same conditions of pressure and temperature, the density of a material is the same on the Earth, Moon and Mars, even though the weight would be different due to different forces of gravity. Thus, the density can change with different temperatures and pressures.Īlso note that mass is not weight, which is mass affected by gravity. The volume of a material is affected by its temperature and pressure on the material. ρ is the density ( ρ is the Greek letter rho). ![]() View all measurement unit conversion calculators on the same page (may not work with all browsers requires Iframe).The density of a material is its mass divided by its volume. The calculators require that your browser has java script enabled. Values lower than 0.001 will be displayed in the e-format e.g. Values of 10 000 or greater will be displayed in the e-format e.g. Values are given to seven significant figures ( the odd result may show 9's or 0's over running). All results shown will be equivalent values. To use the measurement conversion calculators simply enter a number value into the desired field and click calculate. For example, the specific gravity of water at 4 oC is 1.0 while its density is 1.0 gcm -3.ĬONVERSION CALCULATORS Convert between Different Units of Measurement Index of Unit Converters Because specific gravity is a ratio, it is a unitless quantity. Specific gravity is a ratio of the mass of a material to the mass of an equal volume of water at 4 oC. Sorry, your browser does not support JavaScript, which is needed to run this calculator Density, Specific Gravity Definition:ĭensity and specific gravity have very similar, but not quite identical definitions.ĭensity is the mass of material per unit volume. Note: conversions are only valid under the same conditions of temperature and pressure. DENSITY UNIT CONVERSION CALCULATOR DENSITY UNIT
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