Gallon

The gallon (abbr. gal) is an English unit of volume used for measuring liquids (as well as dry matter), with varying definitions between 3? and 4? litres (l). The word has also been used as translation for several foreign units of the same magnitude.

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• An Imperial gallon is exactly 4.54609 litres.
• A US (liquid) gallon is exactly 231 in? (3.785411784 L).

The ratio between them is approximately 6:5.

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Both these gallons in current use?differentiated if necessary by a prefix ?US? or ?Imp.??are subdivided into eight pints, but the US pint is further subdivided into 16 ounces (fl oz), whereas the Imperial one holds 20. Therefore a US fl oz is ca. 29.6 ml and an Imp. fl oz is ca. 28.4 ml. Thus the US fluid ounce and all its subdivisions are bigger than their Imperial ?quivalents, but all the other, larger US liquid measures, including the gallon, are smaller than their Imperial counterparts.

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English unit: The term English units refers to one of a number of systems of units of measurement, some obsolete, and some still in use. In spite of the name, it does not necessarily refer to the (non-SI) system of units still in intermittent use in England itself. In fact, the latter is often referred to outside...

L: L is the twelfth letter of the Latin alphabet....