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 489.9 fluid ounces into gallons we have to multiply 489.9 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

489.9 fl oz → V_(gal)

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

V_(gal) = 489.9 fl oz × 0.0078125 gal

V_(gal) = 3.82734375 gal

The final result is:

489.9 fl oz → 3.82734375 gal

We conclude that 489.9 fluid ounces is equivalent to 3.82734375 gallons:

489.9 fluid ounces = 3.82734375 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.26127781179833 × 489.9 fluid ounces.

Another way is saying that 489.9 fluid ounces is equal to 1 ÷ 0.26127781179833 gallons.

Approximate result

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

489.9 fl oz ≅ 3.827 gal

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