The basic unit of volume in the metric system is the liter (L). The liter is defined as the volume of a cube that measures 10 centimeters on each side, which equates to 1,000 cubic centimeters (cm³). It is widely used to measure liquids and is a fundamental unit in scientific and everyday contexts.
In addition to liters, other units of volume in the metric system include milliliters (mL), which is one-thousandth of a liter, and kiloliters (kL), which is one thousand liters. However, when referring to the basic unit itself, the liter stands as the standard measurement for volume in metric measurements.