quart (UK) [qt (UK)] Unit Converter

Definition of quart (UK) [qt (UK)] unit

The UK quart, or imperial quart, is a unit of volume equal to one quarter of an imperial gallon. It contains two imperial pints, or 40 imperial fluid ounces, and equals approximately 1.1365 litres.

History of quart (UK) [qt (UK)] unit

The quart developed from English measures of capacity used before the modern metric system. Its name comes from “quarter,” reflecting its relationship to the gallon. Britain standardized the imperial quart through the Weights and Measures Act of 1824, which defined it as one quarter of the imperial gallon, itself based on a specified volume of water. The imperial system replaced varying local standards, and the UK quart consequently became 1.1365225 litres. Although metrication reduced its official importance, the measure remains recognized in British legislation and traditional contexts.

Applications of quart (UK) [qt (UK)] unit

Today, the UK quart appears mainly in historical references, specialist publishing, and comparisons between British and American measurements. It may describe traditional quantities of beer, milk, or other liquids, though litres are standard in commerce. Recipes, vintage documents, and conversion tools sometimes retain the unit, while British law may prescribe imperial units for specific products or contexts.

Complete list of quart (UK) [qt (UK)] unit conversion