The British Imperial Liquid Measure is a unit of volume measurement used in the UK and its former colonies. It is commonly spelled as [ˈbrɪtɪʃ ɪmˈpɪəriəl ˈlɪkwɪd ˈmɛʒə(r)], with the first syllable of "British" pronounced as "BRIT-ish" and the second syllable of "Imperial" pronounced as "im-PEER-ee-əl". The word "measure" is spelled with a silent "e", which is not pronounced. The IPA phonetic transcription helps to accurately demonstrate how each sound should be pronounced when speaking this word.
The British imperial liquid measure refers to a system of measurement units used in the United Kingdom and other countries under its influence during the period of British imperialism. This system is specifically designed for measuring liquid volumes.
The main unit of measurement in the British imperial liquid measure is the gallon, which equals 4.54609 liters. This gallon is divided into four quarts, each containing two pints. A pint, in turn, is subdivided into 20 fluid ounces, and a fluid ounce can be divided into 8 fluid drams.
This system of measurement is primarily used for fluids such as water, milk, and other liquids commonly encountered in everyday life. It provides a standard and consistent means to quantify liquid volumes across the British territories that adopted it.
The British imperial liquid measure differs from the American system of liquid measurement, which was developed independently and has different conversion factors. While the American system employs a liquid gallon equal to 3.78541 liters, the British imperial gallon is about 20% larger.
Although the metric system has become the prevailing measurement system in most parts of the world, including the United Kingdom, the British imperial liquid measure is still sometimes used in certain contexts, such as recipes, particularly by older generations or in some traditional industries.