1 imperial gallon in liters

Conversion

1 imperial gallon is equivalent to 4.54609 liters.^[1]

Conversion in the opposite direction

The inverse of the conversion factor is that 1 liter is equal to 0.219969248299088 times 1 imperial gallon.

It can also be expressed as: 1 imperial gallon is equal to $\frac{1}{0.219969248299088}$ liters.

Approximation

An approximate numerical result would be: one imperial gallon is about four point five four liters, or alternatively, a liter is about zero point two two times one imperial gallon.

Units involved

This is how the units in this conversion are defined:

Imperial Gallons

"The imperial (UK) gallon, now defined as exactly 4.54609 litres (about 277.42 cubic inches), is used in some Commonwealth countries and was originally based on the volume of 10 pounds (approximately 4.54 kg) of water at 62 °F (17 °C). The imperial fluid ounce is defined as 1⁄160 of an imperial gallon; there are four quarts in a gallon, two pints in a quart, and 20 Imperial fluid ounces in an imperial pint."

Wikipedia page of imperial gallons

Liters

"The litre (British spelling) or liter (American spelling) is an SI accepted metric system unit of volume equal to 1 cubic decimetre (dm3), 1,000 cubic centimetres (cm3) or 1/1,000 cubic metre. A cubic decimetre (or litre) occupies a volume of 10×10×10 centimetres (see figure) and is thus equal to one-thousandth of a cubic metre."

Wikipedia page of liters

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.