What is 1 liter?

One liter is a unit of volume in the metric system, equal to 1,000 cubic centimeters or approximately 33.8 fluid ounces. It is commonly used to measure liquids such as water, milk, and other beverages. In the United States, the gallon is the more commonly used unit of volume, but liters are widely used throughout the rest of the world. The liter is represented by the symbol "L" or "l."