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 91 fluid ounces into gallons we have to multiply 91 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

91 fl oz → V_(gal)

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

V_(gal) = 91 fl oz × 0.0078125 gal

V_(gal) = 0.7109375 gal

The final result is:

91 fl oz → 0.7109375 gal

We conclude that 91 fluid ounces is equivalent to 0.7109375 gallons:

91 fluid ounces = 0.7109375 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.4065934065934 × 91 fluid ounces.

Another way is saying that 91 fluid ounces is equal to 1 ÷ 1.4065934065934 gallons.

Approximate result

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

91 fl oz ≅ 0.711 gal

An alternative is also that one gallon is approximately one point four zero seven times ninety-one 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