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 397 fluid ounces into gallons we have to multiply 397 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

397 fl oz → V_(gal)

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

V_(gal) = 397 fl oz × 0.0078125 gal

V_(gal) = 3.1015625 gal

The final result is:

397 fl oz → 3.1015625 gal

We conclude that 397 fluid ounces is equivalent to 3.1015625 gallons:

397 fluid ounces = 3.1015625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.32241813602015 × 397 fluid ounces.

Another way is saying that 397 fluid ounces is equal to 1 ÷ 0.32241813602015 gallons.

Approximate result

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

397 fl oz ≅ 3.102 gal

An alternative is also that one gallon is approximately zero point three two two times three hundred ninety-seven 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