how many fifths are in a gallon

[Darlene]

Based on the provided context, there are five fifths in one U.S. liquid gallon.

The term "fifth" is a unit of volume that literally means one-fifth of a gallon. As such, the conversion is a direct reflection of the name. The provided conversion chart confirms that 1 gallon is equal to 5 fifths.

Conversely, this means that one fifth is equal to 0.2 gallons. While the term is historically associated with liquor bottle sizes, in a direct volumetric conversion, the relationship is a simple one-to-five ratio.