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Gallons to Liters

Convert gallons (gal) to liters (L) — instant and accurate

1 gal = 3.78541 L  ·  To convert gallons to liters, multiply by 3.78541.

3.78541 L

Gallons to Liters Conversion Table

GallonsLiters
0.25 gal0.946353 L
0.5 gal1.89271 L
1 gal3.78541 L
2 gal7.57082 L
3 gal11.3562 L
4 gal15.1416 L
5 gal18.9271 L
6 gal22.7125 L
8 gal30.2833 L
10 gal37.8541 L
16 gal60.5666 L
25 gal94.6353 L
50 gal189.271 L
100 gal378.541 L
250 gal946.353 L
500 gal1892.71 L
1000 gal3785.41 L

Formula

liters = gallons × 3.78541
gallons = liters × 0.26417205
Example: 5 gal × 3.78541 = 18.9271 L

About the Gallons-to-Liters Conversion

Converting US gallons to liters is one of the most-searched volume conversions — needed for fuel-economy comparisons, ordering paint or chemicals internationally, and reading metric specifications in a US context. The conversion is exact: 1 US gallon = 3.785411784 liters.

Real-World Examples

  • 1 gal (one US gallon) = 3.78541 L
  • 5 gal (5-gallon container) = 18.9271 L
  • 15 gal (typical car fuel tank) = 56.7812 L
  • 0.5 gal (half-gallon) = 1.89271 L

Liters to Gallons (Reverse)

LitersGallons
0.25 L0.066043 gal
0.5 L0.132086 gal
1 L0.264172 gal
2 L0.528344 gal
3 L0.792516 gal
4 L1.05669 gal
5 L1.32086 gal
6 L1.58503 gal
8 L2.11338 gal
10 L2.64172 gal
16 L4.22675 gal
25 L6.6043 gal
50 L13.2086 gal
100 L26.4172 gal
250 L66.043 gal
500 L132.086 gal
1000 L264.172 gal

Frequently Asked Questions

How many liters are in a gallon?

1 gallon equals 3.78541 liters.

How do I convert gallons to liters?

Multiply the value in gallons by 3.78541 to get liters. For example, 5 gal × 3.78541 = 18.9271 L.

How do I convert liters back to gallons?

Multiply the value in liters by 0.26417205 to get gallons. Equivalently, divide by 3.78541.

How many gallons are in a liter?

1 liter equals 0.26417205 gallons.

How many liters is 1 gal?

1 gal (one gallon) equals 3.78541 L.

Is the gallons-to-liters conversion exact?

The underlying definitions are exact. The decimal representation 3.78541 is rounded; six significant figures is more than sufficient for everyday use.

About Gallons and Liters

The US liquid gallon (symbol gal) equals 4 quarts, 8 pints, or exactly 3.78541 liters. The UK imperial gallon is about 20% larger (4.546 L).

The liter (symbol L) equals one cubic decimeter, or 1,000 cubic centimeters. It is the standard everyday volume unit outside the US.

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