A liter is a metric unit of volume commonly used to measure liquids. It is equivalent to 1,000 cubic centimeters (cm³) or 1 cubic decimeter (dm³). The liter is widely used around the world, especially in countries that follow the metric system, for everyday purposes such as measuring beverages and cooking ingredients. In addition to liquids, the liter can also be used to measure gases and some solids, particularly in scientific contexts. For example, a liter of water weighs approximately 1 kilogram at standard temperature and pressure. This makes it a convenient unit for various applications in science, cooking, and industry.