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 490 fluid ounces into gallons we have to multiply 490 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

490 fl oz → V_(gal)

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

V_(gal) = 490 fl oz × 0.0078125 gal

V_(gal) = 3.828125 gal

The final result is:

490 fl oz → 3.828125 gal

We conclude that 490 fluid ounces is equivalent to 3.828125 gallons:

490 fluid ounces = 3.828125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.26122448979592 × 490 fluid ounces.

Another way is saying that 490 fluid ounces is equal to 1 ÷ 0.26122448979592 gallons.

Approximate result

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

490 fl oz ≅ 3.828 gal

An alternative is also that one gallon is approximately zero point two six one times four hundred ninety 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