Conversion formula

The conversion factor from gallons to liters is 3.7854118, which means that 1 gallon is equal to 3.7854118 liters:

1 gal = 3.7854118 L

To convert 18 gallons into liters we have to multiply 18 by the conversion factor in order to get the volume amount from gallons to liters. We can also form a simple proportion to calculate the result:

1 gal → 3.7854118 L

18 gal → V_(L)

Solve the above proportion to obtain the volume V in liters:

V_(L) = 18 gal × 3.7854118 L

V_(L) = 68.1374124 L

The final result is:

18 gal → 68.1374124 L

We conclude that 18 gallons is equivalent to 68.1374124 liters:

18 gallons = 68.1374124 liters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 liter is equal to 0.014676225068975 × 18 gallons.

Another way is saying that 18 gallons is equal to 1 ÷ 0.014676225068975 liters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that eighteen gallons is approximately sixty-eight point one three seven liters:

18 gal ≅ 68.137 L

An alternative is also that one liter is approximately zero point zero one five times eighteen gallons.

Conversion table

gallons to liters chart

For quick reference purposes, below is the conversion table you can use to convert from gallons to liters