How many liters are in a gallon?
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Q:

How many liters are in a gallon?

A:

Quick Answer

There are 3.79 liters in a U.S. gallon. In the British Imperial system of measurement, which is more prevalent in Canada and the U.K., there are 4.54 liters in a gallon. The imperial gallon is equal to roughly 1.2 U.S. gallons.

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Full Answer

In both the U.S. and British Imperial systems of measurement, a gallon is equal to 4 quarts or 8 pints. However, in the U.S. system, a gallon is 128 fluid ounces, while an imperial gallon is 160 fluid ounces.

The word "gallon" is thought to derive from the medieval Latin word "galeta," meaning a pail or a liquid measure. Its first appearance in the English language dates back to the 13th century.

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    According to the Exploratorium's measurement guide, 2 liters is approximately equal to 1/2 gallon or 8 cups. Metric liters are converted to U.S. customary gallons by multiplying the number of liters by 0.264. The precise equivalence is 0.528 gallons.

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    Conversion of ounces to liters depends on which unit of ounce is being referred to. A half liter of liquid is equivalent to 17.5975 fluid ounces or 16.907 U.S. ounces.

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