Gallon to Liter Converter (gal to L)

How to Convert Gallon to Liter

Formula: Liter = Gallon × 3.78541178

Example: 1 gal = 3.78541178 L

You can also use the interactive converter above. Simply enter any Gallon value and the equivalent Liter value will appear instantly. Click the ⇄ button to reverse the conversion.

Here is a closer look at what Gallon and Liter are used for, plus answers to the questions people ask most about this conversion.

Step-by-step example — Convert 2 gal to L:

What is Gallon and Liter?

A Gallon (gal) is a US customary volume unit, equal to about 3.785 liters, used for fuel and large liquid measures.

A Liter (L) is the standard metric volume unit, used worldwide for beverages, fuel and everyday liquid measures.

Real World Uses of Gallon to Liter Conversion

• Gallon: Commonly used for pricing and pumping fuel at US gas stations.
• Liter: Commonly used for measuring cooking and liquid ingredient volume.
• Gallon: Commonly used in the US for fuel, milk and large liquid containers.
• Liter: Commonly used on food and drink packaging labels outside the US.

Frequently Asked Questions

What is the formula to convert Gallon to Liter?

The formula is: Liter = Gallon x 3.78541178. Multiply any Gallon value by 3.78541178 to get the equivalent in Liter.

What is 1 Gallon in Liter?

1 gal = 3.78541178 L.

How many Gallon are in 1 Liter?

1 L = 0.264172052637296 gal.

Is Gallon bigger or smaller than Liter?

Gallon is bigger than Liter. 1 Gallon = 3.78541178 L.

What is 5 gal in L?

5 gal = 18.92705 L.

What is 5 L in gal?

5 L = 1.320860884 gal.

How does a US gallon compare to a UK imperial gallon?

A US gallon (3.785 L) is about 17% smaller than a UK imperial gallon (4.546 L), so fuel economy figures in mpg mean different things in the two countries.