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Gallons to Liters Converter

Convert gallons to liters instantly. Free online converter with fuel and cooking references, formula, and 100% client-side processing.

100% client-side. Your data never leaves your browser.

3.78541178
1 Gallon = 3.78541178 Liters

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Convert Gallons to Liters

Enter a volume in gallons to convert it to liters. The conversion factor is approximately 3.785 for US gallons. Gallons are used in the US for fuel, milk, and other liquids. Liters are part of the metric system.

Common Volume References

GallonsLitersDescription
1 gal3.79 LMilk jug
5 gal18.93 LGas can
10 gal37.85 LSmall car tank
15 gal56.78 LAverage car tank
25 gal94.64 LSUV tank

How to Use

  1. The tool opens with 1 gallon selected
  2. Type any gallon value in the left input
  3. Read the liter result on the right
  4. Click the swap button to convert liters to gallons

For more conversions, see the full Unit Converter or try Liters to Gallons.