Gallons to Liters Conversion (gal to L)

Gallons to Liters Converter

Enter the volume in gallons below to convert it to liters.

Result in Liters:

1 gal = 3.785412 L

How to Convert Gallons to Liters

To convert a measurement in gallons to a measurement in liters, multiply the volume by the following conversion ratio: 3.785412 liters/gallon.

Since one gallon is equal to 3.785412 liters, you can use this simple formula to convert:

liters = gallons × 3.785412

The volume in liters is equal to the volume in gallons multiplied by 3.785412.

For example, here's how to convert 5 gallons to liters using the formula above.

liters = (5 gal × 3.785412) = 18.927059 L

conversion scale showing gallons and equivalent liters volume values

How Many Liters Are in a Gallon?

There are 3.785412 liters in a gallon, which is why we use this value in the formula above.

1 gal = 3.785412 L

Gallons and liters are both units used to measure volume. Keep reading to learn more about each unit of measure.

What Is a Gallon?

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.^[1] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.

The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal.

Learn more about gallons.

What Is a Liter?

A liter is a unit of volume equal to 1,000 cubic centimeters or 0.264172 US gallons.^[2] The liter is a special name defined for the cubic decimeter and is exactly equal to the volume of one cubic decimeter (1 decimeter is 1/10 of a meter, or 10 centimeters).

The liter is an SI accepted unit for volume for use with the metric system. A liter is sometimes also referred to as a litre. Liters can be abbreviated as L, and are also sometimes abbreviated as l or ℓ. For example, 1 liter can be written as 1 L, 1 l, or 1 ℓ.

Learn more about liters.

Gallon to Liter Conversion Table

Table showing various gallon measurements converted to liters.
Gallons	Liters
1 gal	3.7854 L
2 gal	7.5708 L
3 gal	11.36 L
4 gal	15.14 L
5 gal	18.93 L
6 gal	22.71 L
7 gal	26.5 L
8 gal	30.28 L
9 gal	34.07 L
10 gal	37.85 L
11 gal	41.64 L
12 gal	45.42 L
13 gal	49.21 L
14 gal	53 L
15 gal	56.78 L
16 gal	60.57 L
17 gal	64.35 L
18 gal	68.14 L
19 gal	71.92 L
20 gal	75.71 L
21 gal	79.49 L
22 gal	83.28 L
23 gal	87.06 L
24 gal	90.85 L
25 gal	94.64 L
26 gal	98.42 L
27 gal	102.21 L
28 gal	105.99 L
29 gal	109.78 L
30 gal	113.56 L
31 gal	117.35 L
32 gal	121.13 L
33 gal	124.92 L
34 gal	128.7 L
35 gal	132.49 L
36 gal	136.27 L
37 gal	140.06 L
38 gal	143.85 L
39 gal	147.63 L
40 gal	151.42 L

Table showing various gallon measurements converted to liters.

Gallons

Liters

1 gal

3.7854 L

2 gal

7.5708 L

3 gal

11.36 L

4 gal

15.14 L

5 gal

18.93 L

6 gal

22.71 L

7 gal

26.5 L

8 gal

30.28 L

9 gal

34.07 L

10 gal

37.85 L

11 gal

41.64 L

12 gal

45.42 L

13 gal

49.21 L

14 gal

53 L

15 gal

56.78 L

16 gal

60.57 L

17 gal

64.35 L

18 gal

68.14 L

19 gal

71.92 L

20 gal

75.71 L

21 gal

79.49 L

22 gal

83.28 L

23 gal

87.06 L

24 gal

90.85 L

25 gal

94.64 L

26 gal

98.42 L

27 gal

102.21 L

28 gal

105.99 L

29 gal

109.78 L

30 gal

113.56 L

31 gal

117.35 L

32 gal

121.13 L

33 gal

124.92 L

34 gal

128.7 L

35 gal

132.49 L

36 gal

136.27 L

37 gal

140.06 L

38 gal

143.85 L

39 gal

147.63 L

40 gal

151.42 L

References

National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf
National Institute of Standards and Technology, Units outside the SI, https://physics.nist.gov/cuu/Units/outside.html