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 1089 fluid ounces into gallons we have to multiply 1089 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

1089 fl oz → V_(gal)

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

V_(gal) = 1089 fl oz × 0.0078125 gal

V_(gal) = 8.5078125 gal

The final result is:

1089 fl oz → 8.5078125 gal

We conclude that 1089 fluid ounces is equivalent to 8.5078125 gallons:

1089 fluid ounces = 8.5078125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.11753902662994 × 1089 fluid ounces.

Another way is saying that 1089 fluid ounces is equal to 1 ÷ 0.11753902662994 gallons.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand eighty-nine fluid ounces is approximately eight point five zero eight gallons:

1089 fl oz ≅ 8.508 gal

An alternative is also that one gallon is approximately zero point one one eight times one thousand eighty-nine fluid ounces.

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