# Density Converter

If you are searching for a calculator for the conversion of density units, this **density converter** is what you need!

You can use this calculator for the conversion of density units such as **kg/cm3, kg/m3, lb/ft3, lb/yd3, lb/gal**, and **many more**.

**If you still don't know the density of your material**, you can look it up with our density calculator (we have predefined density values for many materials).

The density definition says density is mass per volume. **This quantity is present in many other physical quantities and formulas**, for example:

- We use density for the conversion between kinematic and dynamic viscosity.
- Density is one of the variables needed to calculate the Reynolds number.
- The speed of sound in solids is estimated based on the material's density and modulus of elasticity.

## Density units

We can find a lot of different density units, which include:

- Kilograms per cubic meter (
**kg/m**) — the official SI unit for density;^{3} - Grams per cubic centimeter (
**kg/cm**) — another metric unit used in most countries around the world, 1 g/cm^{3}^{3}equals 1000 kg/m^{3}; - Avoirdupois ounces per cubic inch (
**oz/in**) — 1 oz/in^{3}^{3}equals 1730 kg/m^{3}; - Avoirdupois pounds per cubic inch (
**lb/in**) — used mainly in the US;^{3} - Pounds per US liquid gallon (
**lb/gal**) — 1 lb/gal = 0.11983 kg/m^{3}.

## How does this density converter work?

**The basic idea behind this density converter is conversion factors**. Conversion factors are numbers or quantities we use to switch from one unit to another. The validity of these factors relies on the idea that multiplying a quantity by one (×1) results in the same quantity.

For example, we know that 1 kilometer equals 1000 meters. As the quotient of two same numbers equals one, then:

Based on the above ideas, we can, for example, convert 2000 meters to its equivalent in km by using the previous relationship:

In the same way, we can, for example, convert from 7000 kg/m^{3} to its equivalent in g/m^{3}, considering that 1000 kg/m^{3} = 1 g/cm^{3}:

That's how we can convert units manually, but **if you want to do it in a matter of seconds, you must use our density converter**.