Understand that both gallons and ounces are units of measurement for volume.

Know that a gallon is a larger unit of volume

while an ounce is a smaller unit of volume

1 gallon is a larger unit of volume

while 1 fluid ounce is a smaller unit of volume

There are different types of gallons

such as the US gallon and the Imperial gallon

1 US gallon is equal to 128 fluid ounces

while 1 Imperial gallon is equal to 160 fluid ounces

To convert gallons to ounces

you need to multiply the number of gallons by the number of fluid ounces in one gallon.