1 US gallon in liters

Conversion

1 US gallon is equivalent to 3.785411784 liters.^[1]

Conversion in the opposite direction

The inverse of the conversion factor is that 1 liter is equal to 0.264172052358148 times 1 US gallon.

It can also be expressed as: 1 US gallon is equal to $\frac{1}{0.264172052358148}$ liters.

Approximation

An approximate numerical result would be: one US gallon is about three point seven nine liters, or alternatively, a liter is about zero point two six times one US gallon.

Units involved

This is how the units in this conversion are defined:

Us Gallons

"The US gallon is legally defined as 231 cubic inches, which is exactly 3.785411784 liters.[2][3] A US liquid gallon of water weighs about 8.34 pounds or 3.78 kilograms at 62 °F (17 °C), making it about 16.6% lighter than the imperial gallon. There are four quarts in a gallon, two pints in a quart and 16 US fluid ounces in a US pint, which makes the US fluid ounce equal to 1⁄128 of a US gallon."

Wikipedia page of US 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.