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Gallons to Liters Converter

Convert US gallons to liters and liters to gallons instantly. Bidirectional volume converter with formula and common values.

gal

Liters

18.92706

L

5 gal = 18.92706 L

liters = gallons × 3.78541

How to Convert Gallons to Liters

To convert US gallons to liters, multiply by 3.78541. The US gallon is defined as exactly 231 cubic inches, which equals 3.785411784 liters.

Conversion Formula

  • Gallons to Liters: L = gal × 3.78541
  • Liters to Gallons: gal = L ÷ 3.78541

Common Conversions

GallonsLiters
13.785
27.571
3.714.006
518.927
1037.854
2075.708
50189.271

US vs Imperial Gallons

This converter uses the US gallon (3.785 L). The Imperial gallon used in the UK is larger at 4.546 liters. Always verify which gallon system applies to your context.

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FAQ

How many liters are in a gallon?

One US gallon equals approximately 3.78541 liters.

How do I convert gallons to liters?

Multiply the number of gallons by 3.78541. For example, 3.7 gallons × 3.78541 = 14.006 liters.

Is a US gallon the same as an Imperial gallon?

No. A US gallon is 3.785 liters while an Imperial (UK) gallon is 4.546 liters. This converter uses US gallons.

How many gallons are in a liter?

One liter equals approximately 0.26417 US gallons.