
Hey there! That's a great question, and it can be a little confusing because of how liquor bottles are sized.
In the world of spirits, the large bottle often called a "half gallon" is typically 1.75 liters (or 1750 milliliters). A "fifth," which used to be one-fifth of a gallon, is now standardized as a 750-milliliter bottle. Based on these common bottle sizes, you can fit 2 and 1/3 fifths into a 1.75-liter bottle.
If you are measuring a true US half gallon, which is 64 fluid ounces, the math is slightly different. A fifth is about 25.4 to 25.6 fluid ounces. Using those measurements, a true half gallon contains about 2.5 fifths of alcohol. So, for practical purposes at the liquor store, the big "handle" or "half gallon" bottle holds just over 2 and a quarter fifths.


