How Many Liters in a Gallon?
Convert Gallon to Liter
How Many Liters in a Gallon?
How Many Liters in a Gallon?
Knowing how many liters in a gallon is important for a variety of reasons, including travel, cooking, and scientific applications.

Table of Contents
What is gallon?
A gallon is a unit of volume used primarily in the United States to measure liquid and gas. The U.S. gallon is defined as exactly 231 cubic inches, which is approximately 3.785 liters.
What is liter?
A liter is a unit of volume used in the metric system and the International System of Units (SI). It is defined as the volume of a cube with sides of one decimeter (or 10 centimeters) in length. One liter is equivalent to 1000 cubic centimeters (cc) or milliliters (ml).
Example of How to Convert Gallons to Liters

To convert gallons to liters, you can use the following formula:
Liters = Gallons x 3.785
For example, if you have 2 gallons of milk that you want to convert to liters, you would use the formula like this:
Liters = 2 x 3.785 Liters = 7.57
Therefore, 2 gallons is equivalent to 7.57 liters.
Here is a table showing common conversions between gallons and liters:
Gallons (U.S.) | Liters |
---|---|
1 | 3.785 |
2 | 7.57 |
3 | 11.355 |
4 | 15.14 |
5 | 18.925 |
10 | 37.85 |
20 | 75.71 |
50 | 189.27 |
You can also read “How Many Ounces in a Cup? Complete Guide“
What is imperial gallon?
The Imperial gallon is a unit of volume that is used in the United Kingdom, Canada, and some other Commonwealth countries. It is defined as the volume of 10 pounds of water at 62°F (17°C) under standard atmospheric pressure conditions. One Imperial gallon is equivalent to approximately 4.54609 liters.
The Imperial gallon is larger than the U.S. gallon, which is used in the United States and some other countries. One U.S. gallon is equivalent to approximately 3.785 liters.
Example: Convert 15 liters to Imperial gallons.
Formula: Imperial gallons = Liters ÷ 4.54609
Solution: Imperial gallons = 15 ÷ 4.54609 = 3.301
Imperial gallons (rounded to three decimal places)
To show the conversion between liters and Imperial gallons in a table, we can use the following:
Liters | Imperial Gallons |
---|---|
1 | 0.219969 |
2 | 0.439938 |
3 | 0.659907 |
4 | 0.879876 |
5 | 1.099845 |
10 | 2.19969 |
20 | 4.39938 |
50 | 10.99845 |
FAQ
How many liters in a gallon?
There are 3.785 liters in one U.S. gallon.
How many liters in a half-gallon?
A half-gallon is equivalent to 1.892 liters.
Is 4 liters the same as 1 gallon?
No, 4 liters is not the same as 1 gallon. One gallon is equivalent to 3.785 liters. So, 4 liters is slightly more than one U.S. gallon.
How many liters make 1 gallon?
One gallon is equivalent to 3.785 liters.
How many Liters is a gallon of fuel UK?
One gallon of fuel in the UK is equivalent to 4.54609 liters. This is known as the Imperial gallon, which is slightly larger than the U.S. gallon that is equivalent to 3.785 liters.
Is 3 liters the same as 1 gallon?
No, 3 liters is not the same as 1 gallon. One gallon is equivalent to 3.785 liters, which is slightly more than 3 liters.
How many liters in a gallon of gas?
One U.S. gallon of gasoline is equivalent to approximately 3.785 liters.
How many quarts in a gallon?
There are 4 quarts in one gallon.