How many fluid ounces in a gallon?
1 Gallon is equal to 128 fluid ounces. To convert gallons to fluid ounces, multiply the gallon value by 128.
For example, to find out how many fluid ounces in a gallon and a half, multiply 1.5 by 128, that makes 192 fluid ounces in 1.5 gallons.
1 US Fluid Gallon = 128 US Fluid Ounces
How many gallons in a fluid ounce?
1 Fluid ounce is equal to 0.0078125 gallon. To convert fluid ounces to gallons, multiply the fluid ounce value by 0.0078125 or divide by 128.
1 US Fluid Ounce = 0.0078125 US Fluid Gallon
You may also use this volume units conversion calculator tool to convert between US, imperial gallons and fluid ounces.
What is Gallon?
Gallon is an imperial and United States Customary measurement system volume unit. The symbol is "gal".
- 1 US fluid gallon = 128 US fluid ounces
- 1 Imperial gallon = 160 Imperial fluid ounces
What is Fluid Ounce?
Fluid ounce is an imperial and United States Customary measurement system volume unit. The symbol is "fl oz".
- 1 US fluid ounce = 0.0078125 US fluid gallon
- 1 Imperial fluid ounce = 0.00625 Imperial gallon