Gallons to Liters Converter
Conversion formula
1 gal = 3.785412 L
US fuel economy, water heaters, aquariums and drums are sized in gallons. Converting to liters helps compare with metric products. These are US gallons; an imperial gallon is 4.546 liters.
Try your own numbers
gal
liters
56.7812 L
How to convert US gallons to liters
- 1
1 US gallon = 3.785412 liters, so multiply by 3.785412.
- 2
Example: 15 × 3.785412 = 56.7812 L.
Gallons to Liters conversion chart
| Gallons | Liters |
|---|---|
| 1 gal | 3.7854 L |
| 2 gal | 7.5708 L |
| 3 gal | 11.3562 L |
| 5 gal | 18.9271 L |
| 10 gal | 37.8541 L |
| 15 gal | 56.7812 L |
| 20 gal | 75.7082 L |
| 50 gal | 189.2706 L |
| 55 gal | 208.1976 L |
| 100 gal | 378.5412 L |
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Frequently asked questions
How do I convert US gallons to liters?
1 US gallon = 3.785412 liters, so multiply by 3.785412. For example, 15 gal = 56.7812 L.
How many liters are in one US gallon?
One US gallon equals 3.785412 liters.
Are US and UK volume units the same?
No. This page uses US customary units: a US fluid ounce is 29.5735 ml, a US cup 236.6 ml and a US gallon 3.785 liters. The UK imperial fluid ounce is 28.4131 ml and the imperial gallon 4.546 liters, and the metric cup used in Australia and Canada is 250 ml.