# Density Conversion

Density conversion tool enables you to quickly calculate the weight to volume ratio of an object in any of the available units.

kg/dm³
kg/m³
lb/cu ft
lb/cu yd
lb/US gal

## Density units

Density is a measure of the mass per unit volume of a substance. The standard unit of density in the International System of Units (SI) is kilograms per cubic meter (kg/m^3). This unit is used for both solids and liquids, and it is defined as the mass of the substance divided by the volume it occupies.

Other units of density that are commonly used include grams per cubic centimeter (g/cm^3), which is commonly used for solids, and grams per milliliter (g/mL), which is commonly used for liquids.

Some other units of density that are used less commonly include pounds per cubic foot (lb/ft^3), which is used in the United States, and ounces per cubic inch (oz/in^3), which is used in the imperial system of units.

It's important to note that density is a measure of the mass of a substance, not the weight. The weight of a substance is the force exerted on it due to gravity, and it is equal to the mass of the substance multiplied by the acceleration due to gravity.

## Density of water in lb/gal

The density of water is approximately 8.34 pounds per gallon (lb/gal) at room temperature (around 70 degrees Fahrenheit or 21 degrees Celsius). This value is based on the density of water at standard temperature and pressure (STP), which is defined as a temperature of 68 degrees Fahrenheit (20 degrees Celsius) and a pressure of 1 atmosphere.

It's important to note that the density of water can vary slightly depending on the temperature and pressure. At higher temperatures, the density of water decreases slightly due to thermal expansion. At higher pressures, the density of water increases slightly due to the increased forces acting on the molecules of the substance.

The density of water is also affected by the presence of dissolved substances. For example, the density of seawater is higher than the density of freshwater due to the higher concentration of dissolved salts.

## Density of water in grams per cubic centimeters

The density of water is approximately 1 gram per cubic centimeter (g/cm^3) at room temperature (around 70 degrees Fahrenheit or 21 degrees Celsius). This value is based on the density of water at standard temperature and pressure (STP), which is defined as a temperature of 68 degrees Fahrenheit (20 degrees Celsius) and a pressure of 1 atmosphere.

It's important to note that the density of water can vary slightly depending on the temperature and pressure. At higher temperatures, the density of water decreases slightly due to thermal expansion. At higher pressures, the density of water increases slightly due to the increased forces acting on the molecules of the substance.

The density of water is also affected by the presence of dissolved substances. For example, the density of seawater is higher than the density of freshwater due to the higher concentration of dissolved salts.

In the International System of Units (SI), the standard unit of density is kilograms per cubic meter (kg/m^3). However, grams per cubic centimeter (g/cm^3) is a commonly used unit of density, especially for solids. One gram per cubic centimeter is equivalent to 1000 kilograms per cubic meter.