# How Many Litres in 1 Gallon?

A gallon is a unit of measurement used when quantifying fluid substances especially oil. An imperial gallon is made up of about 4.546 litres. On the other hand, a US gallon is made of 3.785 litres of fluid.
One gallon is equal to 3.785412 liters.
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In one English gallon, there are 4.55 litres, while a US gallon consists of 3.79 litres. A gallon is actually a measure of capacity or volume. There are three definitions for gallon; the imperial gallon which is not officially used in the UK and Ireland, the United States customary unit (which as the name suggests is mainly used in the US) and finally the dry gallon.
1 Imperial gallon is equivalent to 4.54609188 litres. Basic unit of volume in the metric system. A litter of water weighs one kilogram.
Imperial gallon is the British capacity measure while a litre is the basic unit of volume in the metric system. There are 4.55 litres in an imperial gallon.
There are 4.55 litres in one gallon. In the USA, it is slightly different with 3.79 litres to an American gallon.
Q&A Related to "How Many Litres in 1 Gallon"
 There are exactly 3.79 litres in every gallon. Furthermore, a gallon is also equal to 128 ounces, 4 quarts, 16 cups, and 8 pints. More measurement conversions are abundant online. http://answers.ask.com/Reference/Other/how_many_li...
 One liter = 0.22 Imperialor 0.264 US gallons. http://wiki.answers.com/Q/How_many_gallons_are_in_...
 There are 3.785412 liters in a gallon. http://www.chacha.com/question/how-many-litres-in-...
 1. Write down 40 gallons on a piece of paper. 2. Multiply 40 by 3.785, the conversion factor for liters to gallons. 3. Write the product as units of liters. For example, 151.4 liters http://www.ehow.com/how_8220234_convert-40-gallons...
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