Here are some common units:

* kg/m³ (kilograms per cubic meter): This is the standard unit in the International System of Units (SI).

* g/cm³ (grams per cubic centimeter): This is a commonly used unit in chemistry and physics.

* lb/ft³ (pounds per cubic foot): This is a common unit in the United States.

It's important to note that volumetric density is often referred to as density. While technically correct, it's important to understand that "density" can also refer to mass density, which is the mass per unit volume of a substance.