Volume is the three-dimensional space inside an object. A meter is a length of measurement used in the metric system. Cubic meters is a standard measurement used to describe the volume of a cube. You can calculate the cubic meters of any cube my multiplying the length by the width by the height of the cube.

Measure the width of the cube. For example, assume the width of a cube measures 1.3 meters.

Measure a height of the cube. For example, assume the height of a cube measures 1.7 meters.

Measure the depth of a cube. For example, assume the depth of a cube measures .6 meters.

Multiply the width by the height by the depth. Continuing the same example, 1.3 x 1.7 x .6 = 1.326 meters cubed. This figure represents the volume expressed in cubic meters for the cube.