###### Asked in Units of MeasureVolume

# How many liters are in an imperial gallon?

## Answer

###### Wiki User

###### January 31, 2014 4:28PM

One Imperial gallon = **4.546 L**

*(rounded to the milliliter)*

And the exact, legal value is: 1 imperial gallon = 4,546 09
L

It appears that a British Gallon is different from a US gallon.
This derives from the fact that where a US pint is 16 fluid ounces,
a British pint consists of 20 fluid ounces. There are still 8 pints
in a gallon. There are (approximately) 28.8ml in a fluid ounce.
There are 160 fluid ounces in a British gallon. There are 128 fluid
ounces in a US gallon. Therefore, there are (approximately) 4.6
litres in a British gallon; and (approximately) 3.7 liters (sic) in
a US gallon.