What is volume?Volume is a measure of the amount of three-dimensional space occupied by an object. The volume of a container is generally understood to be the capacity of the container; i.e., the amount of fluid (gas or liquid) that the container could hold, rather than the amount of space the container itself displaces.
InputUS Gallon is defined as 231 cubic inches, which is exactly 3.785411784 liters.
Cubic Meter is the SI derived unit of volume. It is the volume of a cube with edges one meter in length.