## Conversion formula

The conversion factor from gallons to fluid ounces is 128, which means that 1 gallon is equal to 128 fluid ounces:

1 gal = 128 fl oz

To convert 3.8 gallons into fluid ounces we have to multiply 3.8 by the conversion factor in order to get the volume amount from gallons to fluid ounces. We can also form a simple proportion to calculate the result:

1 gal → 128 fl oz

3.8 gal → V(fl oz)

Solve the above proportion to obtain the volume V in fluid ounces:

V(fl oz) = 3.8 gal × 128 fl oz

V(fl oz) = 486.4 fl oz

The final result is:

3.8 gal → 486.4 fl oz

We conclude that 3.8 gallons is equivalent to 486.4 fluid ounces:

3.8 gallons = 486.4 fluid ounces

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 fluid ounce is equal to 0.0020559210526316 × 3.8 gallons.

Another way is saying that 3.8 gallons is equal to 1 ÷ 0.0020559210526316 fluid ounces.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three point eight gallons is approximately four hundred eighty-six point four fluid ounces:

3.8 gal ≅ 486.4 fl oz

An alternative is also that one fluid ounce is approximately zero point zero zero two times three point eight gallons.

## Conversion table

### gallons to fluid ounces chart

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

gallons (gal) fluid ounces (fl oz)
4.8 gallons 614.4 fluid ounces
5.8 gallons 742.4 fluid ounces
6.8 gallons 870.4 fluid ounces
7.8 gallons 998.4 fluid ounces
8.8 gallons 1126.4 fluid ounces
9.8 gallons 1254.4 fluid ounces
10.8 gallons 1382.4 fluid ounces
11.8 gallons 1510.4 fluid ounces
12.8 gallons 1638.4 fluid ounces
13.8 gallons 1766.4 fluid ounces