How many cubic inches are in one gallon of water?

One gallon of water is equivalent to 231 cubic inches. This conversion is derived from standard measurements used in both culinary and practical applications. The gallon is a larger measurement that is often used for liquid volumes, and knowing that 1 US gallon contains exactly 231 cubic inches is essential for various calculations in firefighting and engineering contexts, such as when determining the capacity of tanks or calculating water flow rates.

This specific conversion helps firefighters and apparatus engineers understand how much water can be retained within a given space, making it a critical piece of knowledge when managing firefighting resources or planning water supply strategies. Thus, the choice indicating that one gallon of water equals 231 cubic inches is fundamentally accurate and important for practical applications in the field.