Convert Liter to Quart (US)

The liter was originally introduced in France in the 18th century as part of the metric system during the French Revolution. It was based on the volume of 1 kilogram of water at the temperature of its maximum density, which is about 4°C. Over time, the liter became a standard unit for measuring liquids and volumes in many countries around the world. Although the liter is not an SI base unit (the SI unit of volume is the cubic meter), it is accepted for use with the SI, and it remains widely used internationally for measuring everyday volumes, such as beverages, fuel, and cooking ingredients.

The US quart originated from the British quart, which was derived from the gallon in the imperial system. The British quart was historically based on the volume of a gallon of water. However, in 1824, the US gallon was redefined as 231 cubic inches, which made the US quart slightly smaller than its British counterpart. As a result, the US quart became standardized as 1/4th of a US gallon, which is approximately 0.94635 liters, in contrast to the 1.1365 liters of the British quart. The US quart continues to be widely used in the United States for measuring liquids, especially in recipes and in the sale of liquids like milk, juice, and gasoline.