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 1221 fluid ounces into gallons we have to multiply 1221 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

1221 fl oz → V_(gal)

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

V_(gal) = 1221 fl oz × 0.0078125 gal

V_(gal) = 9.5390625 gal

The final result is:

1221 fl oz → 9.5390625 gal

We conclude that 1221 fluid ounces is equivalent to 9.5390625 gallons:

1221 fluid ounces = 9.5390625 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.1048321048321 × 1221 fluid ounces.

Another way is saying that 1221 fluid ounces is equal to 1 ÷ 0.1048321048321 gallons.

Approximate result

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

1221 fl oz ≅ 9.539 gal

An alternative is also that one gallon is approximately zero point one zero five times one thousand two hundred twenty-one 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