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 438 fluid ounces into gallons we have to multiply 438 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

438 fl oz → V_(gal)

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

V_(gal) = 438 fl oz × 0.0078125 gal

V_(gal) = 3.421875 gal

The final result is:

438 fl oz → 3.421875 gal

We conclude that 438 fluid ounces is equivalent to 3.421875 gallons:

438 fluid ounces = 3.421875 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.29223744292237 × 438 fluid ounces.

Another way is saying that 438 fluid ounces is equal to 1 ÷ 0.29223744292237 gallons.

Approximate result

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

438 fl oz ≅ 3.422 gal

An alternative is also that one gallon is approximately zero point two nine two times four hundred thirty-eight 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