Gallons to Liters
1 gallon = 3.785411784 liters
Converter Calculator
1 Gallons = 3.785412 Liters
Explanation
Multiply gallons by 3.785411784 because fluid ounces (fl oz) are volume and a US gallon totals 128 fl oz or 3785.411784 mL, so multiplying keeps the same volumetric definition.
Use it for labeling, shipping, or scoring gallon-sized beverage containers in metric liters without losing the customary context.
Common Conversion Values
| Gallons | Liters |
|---|---|
| 0.5 | 1.892706 |
| 1 | 3.785412 |
| 2 | 7.570824 |
| 3 | 11.356235 |
| 4 | 15.141647 |
How to use this hub
- Choose a converter family.
- If converting to/from grams from a volume unit, select an ingredient.
- For pure unit changes (volume↔volume or weight↔weight), use universal conversions.
If your conversion includes grams, you’ll choose an ingredient; otherwise you won’t.
Frequently Asked Questions
Does this use the US gallon?
Yes. It relies on the US gallon defined as 3785.411784 milliliters (128 US fluid ounces).
Why multiply by 3.785411784?
Because that is the number of liters in one US gallon, so multiplying yields the metric equivalent.
Why mention fluid ounces?
Fluid ounces (fl oz) are volume, and a gallon is built from 128 fl oz, so the conversion stays within that volumetric dimension.
Are decimals supported?
Yes. Decimal gallon amounts remain precise because the multiplication factor is exact.