# 1 Answer

The gallon1 is a common unit of liquid measure though it can also be used to determine volume of some dry substances. The liter2 is a unit of volume from the metric system. This difference may cause problems in converting gallons to liters and vice versa. There are several definitions of the gallon. But if we mean US liquid gallons, the answer to the question, “How many liters are there in one gallon?” is following:

One US gallon consists of 3.785 liters.

US liquid gallons are mostly spread in the USA, though they are also used for measuring fuel in many other countries, like Colombia, Ecuador, Haiti, Panama, Nicaragua, Peru, etc. The US dry gallon is rarely used and has about 4.404 liters.

Differences between US gallons and Imperial gallons:

But don’t forget that there is also the imperial (European, UK) gallon, which differs from the US variant. It is a part of the Standard system of measures, which is used in several countries for a long time. The imperial gallon is defined as 4.546 liters, which is more than the US gallon has. This definition comes from the volume of ten pounds of water measures at the temperature of 62°farehnheit. From 2000, it is not a legal measurement unit anymore in the UK.

As stated above, one US gallon consists of about 3.785 liters. It means that to convert metric liters to US liquid gallons, you should multiply liters by 0,264. If you want to know how many liters are in some number of gallons, you need to multiply gallons by 3.785.

See conversion chart here.>>>> http://1howmany.com/how-many-liters-in-a-gallon

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