Fluid Ounces to Gallons Conversion

Enter the beer volume in fluid ounces below to get the value converted to gallons.

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Results in Gallons:
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1 fl oz = 0.007813 gallons

How to Convert Fluid Ounces to Gallons

To convert a fluid ounce measurement to a gallon measurement, divide the beer volume by the conversion ratio. One gallon is equal to 128 fluid ounces, so use this simple formula to convert:

gallons = fluid ounces ÷ 128

The beer volume in gallons is equal to the fluid ounces divided by 128.

For example, here's how to convert 500 fluid ounces to gallons using the formula above.
500 fl oz = (500 ÷ 128) = 3.90625 gallons

Fluid ounces and gallons are both units used to measure beer volume. Keep reading to learn more about each unit of measure.

Fluid Ounces

In the US, beer is often measured by the fluid ounce, which is the basis for other units of beer volume measure. The standard US bottle of beer contains 12 fluid ounces.

The fluid ounce is a US customary unit of beer volume. Fluid ounces can be abbreviated as fl oz, for example 1 fluid ounce can be written as 1 fl oz.

Gallons

The US gallon is a standard size equivalent to 128 fl. oz. of beer.

The gallon is a US customary unit of beer volume.

Fluid Ounce to Gallon Conversion Table

Fluid ounce measurements converted to gallons
Fluid Ounces Gallons
1 fl oz 0.007813
2 fl oz 0.015625
3 fl oz 0.023438
4 fl oz 0.03125
5 fl oz 0.039063
6 fl oz 0.046875
7 fl oz 0.054688
8 fl oz 0.0625
9 fl oz 0.070313
10 fl oz 0.078125
20 fl oz 0.15625
30 fl oz 0.234375
40 fl oz 0.3125
50 fl oz 0.390625
60 fl oz 0.46875
70 fl oz 0.546875
80 fl oz 0.625
90 fl oz 0.703125
100 fl oz 0.78125
200 fl oz 1.5625
300 fl oz 2.3438
400 fl oz 3.125
500 fl oz 3.9063
600 fl oz 4.6875
700 fl oz 5.4688
800 fl oz 6.25
900 fl oz 7.0313
1,000 fl oz 7.8125