Gallons to Liters
Convert US gallons to liters instantly. Enter any volume in gallons and see the equivalent in liters with a visual comparison.
Result
3.7854 L
L = gal × 3.78541
About this calculator
One US gallon equals approximately 3.785 liters. This converter uses the US liquid gallon (3.78541 L), not the imperial gallon (4.546 L). Useful for converting fuel economy, milk jugs, water bottles, and cooking measurements from US recipes to metric quantities.
How to use the Gallons to Liters converter
- Enter your value into the input field.
- Read the converted result.
- Adjust the input to try other values instantly.
- Copy the page URL to share the exact conversion.
Common examples
- 1 gal = 3.7854 L
- 2 gal = 7.5708 L
- 5 gal = 18.9271 L
- 10 gal = 37.8541 L
- 20 gal = 75.7082 L
Frequently asked questions
How does the Gallons to Liters converter work?
Enter a value in the source unit and the calculator applies the standard conversion factor (or temperature formula, where relevant) to give you the equivalent value in the target unit. The result updates as you type.
When would I use a Gallons to Liters converter?
Whenever you need to translate a quantity between two units of measurement — common cases include travel, cooking, shipping, engineering, science homework, and reading product specifications written in a different system.
How accurate is the Gallons to Liters converter?
Conversions use the standard definitions of each unit and full-precision arithmetic. The displayed value is rounded for readability, but the underlying calculation keeps higher precision so repeated conversions do not drift.
Can I share a specific conversion with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same conversion for whoever clicks it.