A litre 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 litre is widely used around the world, especially in countries that follow the metric system, for everyday purposes like measuring beverages and cooking ingredients. In scientific contexts, the litre is often used in laboratories and research to quantify liquids. It is also a standard measurement for fuel, with petrol and diesel sold by the litre. The symbol for litre is "L," and it is an essential unit in fields such as chemistry and environmental science.