You may use this volume conversion chart if you are converting gallons (gal) to
fluid ounces (oz) for the values listed in the table below.
The ounce unit used in this conversion chart is fluid ounce (fl. oz.) and is a unit of volume and is
different than the ounce which is a unit of mass. Also, fluid ounces used in US customary and imperial (UK) measurement systems are different
in sizes. US fluid ounce is about 4 percent larger than the UK fluid ounce.
Gallon is a unit of volume used mostly in liquid and dry measures. Gallons used in US customary and imperial (UK)
are different in sizes. Gallons are widely used to measure the fuel.
If wondering how many ounces in a gallon, the answer is 128.
1 Gallon [US, Fluid] = 128 Fluid Ounces [US]
1 Gallon [US, Fluid] = 133.227 869 Ounces [UK, Fluid]
1 Gallon [UK] = 160 Ounces [UK, Fluid]
1 Gallon [UK] = 153.721 590 Ounces [US, Fluid]
1 Gallon [US, Dry] = 148.946 Ounces [US, Fluid]
To convert gallons to ounces for any other values, please go to
Volume Conversions