Gallons to Liters Converter
Convert US gallons (gal) to liters (L) and back — 1 US gallon = 3.78541 liters. — free, fast and private.
Your conversion will appear here.
Example: 10 US gallons = 37.8541 L. 1 gallon = 3.78541 L.
How to use Gallons to Liters Converter
- Enter the value you want to convert.
- Choose the direction — gal to L, or the reverse.
- Click Convert to see the result instantly.
- Use Swap Direction to convert back, or Copy to copy the answer.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
How many L are in 1 gal?
1 gal = 3.78541 L. Example: 10 US gallons = 37.8541 L. 1 gallon = 3.78541 L.
Can I convert back from L to gal?
Yes. Click the Swap button (or choose the reverse direction) and the tool converts L back to gal with the same exact factor.
Is this converter free?
Yes, it is 100% free with no sign-up, and it works instantly in your browser.
Is my data uploaded anywhere?
No. All conversions run in your browser and your numbers are never sent to a server.