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 1.5 gallons into liters we have to multiply 1.5 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

1.5 gal → V_(L)

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

V_(L) = 1.5 gal × 3.7854118 L

V_(L) = 5.6781177 L

The final result is:

1.5 gal → 5.6781177 L

We conclude that 1.5 gallons is equivalent to 5.6781177 liters:

1.5 gallons = 5.6781177 liters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 liter is equal to 0.17611470082771 × 1.5 gallons.

Another way is saying that 1.5 gallons is equal to 1 ÷ 0.17611470082771 liters.

Approximate result

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

1.5 gal ≅ 5.678 L

An alternative is also that one liter is approximately zero point one seven six times one point five 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