How many fluid ounces in 1 gallon?
The answer is 128.
We assume you are converting between US fluid ounce and gallon [US, liquid].
You can view more details on each measurement unit: fluid ounces or
gallon
The SI derived unit for volume is the cubic meter.
1 cubic meter is equal to 33814.022558919 fluid ounces, or 264.17205124156 gallon.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between fluid ounces and gallons.
Type in your own numbers in the form to convert the units!

››Quick conversion chart of fluid ounces to gallon

1 fluid ounces to gallon = 0.00781 gallon

10 fluid ounces to gallon = 0.07813 gallon

50 fluid ounces to gallon = 0.39063 gallon

100 fluid ounces to gallon = 0.78125 gallon

200 fluid ounces to gallon = 1.5625 gallon

500 fluid ounces to gallon = 3.90625 gallon

1000 fluid ounces to gallon = 7.8125 gallon

››Want other units?

You can do the reverse unit conversion from
gallon to fluid ounces, or enter any two units below:

Note that this is a fluid ounce measuring volume, not the typical ounce that measures weight. It only applies for a liquid ounce in U.S. measurements.

››Metric conversions and more

ConvertUnits.com provides an online
conversion calculator for all types of measurement units.
You can find metric conversion tables for SI units, as well
as English units, currency, and other data. Type in unit
symbols, abbreviations, or full names for units of length,
area, mass, pressure, and other types. Examples include mm,
inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm,
metres squared, grams, moles, feet per second, and many more!