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 129 fluid ounces into gallons we have to multiply 129 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

129 fl oz → V_(gal)

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

V_(gal) = 129 fl oz × 0.0078125 gal

V_(gal) = 1.0078125 gal

The final result is:

129 fl oz → 1.0078125 gal

We conclude that 129 fluid ounces is equivalent to 1.0078125 gallons:

129 fluid ounces = 1.0078125 gallons

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 gallon is equal to 0.9922480620155 × 129 fluid ounces.

Another way is saying that 129 fluid ounces is equal to 1 ÷ 0.9922480620155 gallons.

Approximate result

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

129 fl oz ≅ 1.008 gal

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