About the Units
fluid ounce (fl oz)
A US fluid ounce is 1/8 of a cup.
gallon (gal)
A US gallon is equal to 4 quarts.
Common Conversions
- 1 fl oz = 0.007812499 gal
- 128.00002 fl oz = 1 gal
Convert from fluid ounces to gallons
Conversion Information
To convert from fluid ounces to gallons, multiply by 0.007812499
1 fl oz = 0.007812499 gal