Gallons to Liters Converter
Convert US gallons to liters instantly, free in your browser. Enter a volume in gallons and get the exact value in liters — no upload, no sign up.
Your result will appear here
Result
1 US gal = 3.78541 L · L = gal × 3.78541
How to use
- Enter a value in US gallons (gal) in the box above — it is already filled with 10 as an example.
- Click Convert to liters (L) (or just keep typing — the result updates as you type).
- Read the converted value in liters (L). Use Swap to convert back from liters (L) to US gallons (gal).
Frequently asked questions
What is the formula to convert US gallons (gal) to liters (L)?
1 US gal = 3.78541 L . L = gal × 3.78541.
How do I convert liters (L) back to US gallons (gal)?
Use the reverse conversion: 1 L = 0.264172 US gal . gal = L × 0.264172. Or just click the Swap button on this page — it flips the direction and converts your value back instantly.
When would I need to convert US gallons (gal) to liters (L)?
US gallons are used for fuel, milk and other liquids in the United States, while liters are the standard elsewhere. Use this converter for fuel consumption, aquarium and tank volumes. You can convert gal to l — no signup, nothing to install.
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