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Gallons to Liters Converter
Convert US gallons to liters (litres) instantly, with every other volume unit alongside.
Enter a volume to convert it
Enter a volume and pick its unit. Every other unit is calculated live as you type — right here in your browser, with nothing sent to a server.
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How to convert gallons to liters
Multiply US gallons by 3.785411784 to get liters (litres). For example, 5 gal × 3.78541 = 18.93 L. A quick estimate is gallons × 4, minus 5%. The converter above also shows quarts, pints, cups and fluid ounces, all US customary units, so you can scale a recipe or a container in one step.
US gallons to liters table
| US gallons (gal) | Liters (L) |
|---|---|
| 1 gal | 3.7854 L |
| 2 gal | 7.5708 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
| 15 gal | 56.7812 L |
| 55 gal | 208.1976 L |
Common questions
How many liters is 1 gallon?
One US gallon is 3.785 liters. One UK imperial gallon is 4.546 liters.
How many liters is a 55-gallon drum?
55 US gallons is about 208.2 liters, which is why these drums are also sold as 208 L or 210 L.
How many quarts are in a gallon?
Four US quarts, eight pints or sixteen cups.