Conversion formula

The conversion factor from fluid ounces to gallons is 0.0078125, which means that 1 fluid ounce is equal to 0.0078125 gallons:

1 fl oz = 0.0078125 gal

To convert 1 fluid ounce into gallons we have to multiply 1 by the conversion factor in order to get the volume amount from fluid ounces to gallons. We can also form a simple proportion to calculate the result:

1 fl oz → 0.0078125 gal

1 fl oz → V_(gal)

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

V_(gal) = 1 fl oz × 0.0078125 gal

V_(gal) = 0.0078125 gal

The final result is:

1 fl oz → 0.0078125 gal

We conclude that 1 fluid ounce is equivalent to 0.0078125 gallons:

1 fluid ounce = 0.0078125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 128 × 1 fluid ounce.

Another way is saying that 1 fluid ounce is equal to 1 ÷ 128 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one fluid ounce is approximately zero point zero zero eight gallons:

1 fl oz ≅ 0.008 gal

An alternative is also that one gallon is approximately one hundred twenty-eight times one fluid ounce.

Conversion table

fluid ounces to gallons chart

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