How many quarts are in a gallon?

To solve this question, let's break it down step by step.

Understand the relationship between quarts and gallons:

The United States customary system defines a gallon as a unit of liquid measurement. One gallon is equal to 4 quarts.
Visualizing the breakdown:

A gallon can be divided into 4 equal parts, where each part represents a quart. This relationship can be written as: 1 gallon = 4 quarts
Answer:

Therefore, there are 4 quarts in a gallon.
This relationship is fixed in both the US customary system and the UK imperial system, although the size of gallons and quarts differs between the two systems.