Let us try to understand the most common kitchen query of  how many ounces in a gallon through the historical roots unveiling the connection between ounces and gallons.

The story takes us to Rome , where the Roman “Uncia” became the base of weight measurement. Breaking down the Roman pound into 12 parts , each “Uncia” became a standard  unit of weight for trade. 1/12th of Roman pound “Uncia” laid the foundation of Ounce that we use today.

The term “Gallon” has its roots in medieval England which was initially used for measuring of Beer and Ale.

 Fluid Ounces and Liquid Gallons:

•  In US Customary systems there are 128 fluid ounces in a gallon which is a standard for measuring milk, cooking oil, water etc.

Is 1 gallon the same as 64 oz?

The answer is No.  1 gallon = 128 fuid ounces. This means that 64 oz is equal to half a gallon.

On the other hand dry ounces are used to measure ingredients like flour and sugar.

 A US dry gallon is approximately 148.94 fluid ounces.

 One US gallon is approximately 3.785 liters.

 One US cup (Both dry and liquid) equals 8 fluid ounces or 240 milliliters.

 Here is a chart for  “Ounces in Gallon”