The cubic meter capacity of a small dump truck varies depending on the specific model and manufacturer, but generally, a small dump truck can hold between 4 to 8 cubic meters of soil. The exact volume will depend on the dimensions of the truck bed and whether it's loaded level or heaped. It is important to consult the specific truck's specifications to determine its precise capacity. When calculating how much soil you need to move, remember to account for the compaction rate of the soil being transported.