What Is the Liters to Gallons Converter?
This tool converts a volume measured in liters into gallons. Because the word "gallon" means different things in different places, the converter shows both the US liquid gallon (used in the United States) and the imperial gallon (used in the United Kingdom and some Commonwealth countries). A US gallon is noticeably smaller than a UK gallon, so the same number of liters yields a larger US-gallon figure.
How to Use It
Enter the number of liters you want to convert and the calculator instantly returns the equivalent gallons. The main result highlights US gallons, while the table below also lists the imperial-gallon equivalent so you can pick the unit that matches your context.
The Formula Explained
The conversion is a simple division by a fixed factor. One US liquid gallon is defined as exactly 3.785411784 liters, so:
$$\text{gal}_{US} = \dfrac{\text{liters}}{3.785411784}$$
For imperial gallons the factor is 4.54609 liters per gallon, giving $$\text{gal}_{UK} = \dfrac{\text{liters}}{4.54609}$$.
Worked Example
Suppose you have 10 liters of fuel. Dividing by 3.785411784 gives $$\frac{10}{3.785411784} \approx 2.6417 \text{ US gallons}.$$ Using the imperial factor, $$\frac{10}{4.54609} \approx 2.1997 \text{ UK gallons}.$$
FAQ
Why are US and UK gallons different? They are independent historical units. The US gallon (3.785 L) descends from the English wine gallon, while the imperial gallon (4.546 L) was standardized later in Britain.
How many liters are in a gallon? About 3.785 liters in a US gallon and about 4.546 liters in an imperial gallon.
Is this exact? The US gallon factor \(3.785411784\) is exact by definition; results are rounded for display but computed at full precision.
