How many quarts are in a gallon?

A gallon is a standard unit of volume commonly used in the United States for measuring liquids. To understand the conversion between gallons and quarts, it’s important to know the basic relationships between these units.

One gallon is equivalent to four quarts. This relationship holds true in both the U.S. customary system and the imperial system used in a few other countries. Therefore, when calculating how many quarts are in a gallon, you multiply the number of gallons by four.

In this case, since there is one gallon, that equates to four quarts. This is why the correct answer is identified as four quarts, confirming the foundational knowledge of liquid measurements in the pharmacy and medical settings. Understanding these conversions is crucial for accurate dispensing and dosage calculations, ensuring patient safety and effective medication administration.