Conversions

Gallons to litres

Convert US gallons to litres. Includes a reference table for common fuel and volume amounts.

Enter value

Result

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1 US gallon = 3.78541 litres

Need the reverse? Try litres → US gallons instead →

US gallons to litres — reference table

US gallons (gal)	litres (L)
1gal	1.893L
1gal	3.785L
2gal	7.571L
5gal	18.927L
10gal	37.854L
15gal	56.781L
20gal	75.708L
30gal	113.562L
50gal	189.27L

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How to use Gallons to litres

01 Enter the value you want to convert in the input field
02 The converted result appears instantly
03 Scroll down for a quick-reference table of common values

Frequently asked questions

Common questions about Gallons to litres.

Is Gallons to litres free to use?

Yes, Gallons to litres is completely free. No account, subscription, or payment is ever required — just open the page and start using it.

Does Gallons to litres upload my data to a server?

No. Gallons to litres runs entirely in your web browser using client-side JavaScript. Your files, text, and data never leave your device, making it 100% private.

Can I use Gallons to litres on my phone or tablet?

Yes. Gallons to litres is fully responsive and works on all modern smartphones, tablets, and desktop browsers without installing any app.

How accurate are the conversions?

Gallons to litres uses standard mathematical conversion formulas and displays results to up to 8 decimal places of precision.

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About Gallons to litres

The US gallon is the standard unit of liquid volume in the United States, used for fuel, beverages, paint, and agricultural quantities. One US gallon equals exactly 3.78541 litres. Note that the imperial gallon used historically in the UK is larger — 4.54609 litres — so always confirm which gallon is intended when converting. Gallons to Litres conversion is commonly needed when travelling to or from the US and comparing fuel economy, purchasing imported products sold in gallons, or understanding US recipe quantities in a metric kitchen.