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How Many Ounces are in a Gallon?

Converting between ounces and gallons is a fundamental aspect of volume measurement, especially in contexts where both the imperial and US customary systems are used.

Answer: There are 128 ounces in a US gallon.

This conversion is based on the US liquid measurement system:

One Gallon is equal to 128 ounces.

It’s important to note that these measurements are specific to the US system. The UK gallon, used in the British imperial system, is different, where 1 UK gallon equals 160 UK fluid ounces.

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