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 65.5 fluid ounces into gallons we have to multiply 65.5 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

65.5 fl oz → V_(gal)

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

V_(gal) = 65.5 fl oz × 0.0078125 gal

V_(gal) = 0.51171875 gal

The final result is:

65.5 fl oz → 0.51171875 gal

We conclude that 65.5 fluid ounces is equivalent to 0.51171875 gallons:

65.5 fluid ounces = 0.51171875 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 1.9541984732824 × 65.5 fluid ounces.

Another way is saying that 65.5 fluid ounces is equal to 1 ÷ 1.9541984732824 gallons.

Approximate result

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

65.5 fl oz ≅ 0.512 gal

An alternative is also that one gallon is approximately one point nine five four times sixty-five point five 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