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