1. What is the Volume of 1 Gallon?

Definition: One US gallon is defined as exactly 231 cubic inches.

Purpose: This standard measurement is used in various industries including engineering, chemistry, and manufacturing.

2. How Does the Conversion Work?

The conversion uses the formula:

Where:

• \( V \) — Volume in cubic inches
• \( G \) — Number of gallons

Explanation: Multiply the number of gallons by 231 to get the equivalent volume in cubic inches.

3. Importance of Gallon Volume Standardization

Details: The 231 in³ standard ensures consistency across measurements in the US customary system, particularly for liquid volumes.

4. Using the Calculator

Tips: Enter the number of gallons to convert to cubic inches. The default value shows the volume for 1 gallon (231 in³).

5. Frequently Asked Questions (FAQ)

Q1: Why is 1 gallon equal to 231 cubic inches?
A: This standard was established in the 19th century based on the volume of 8 pounds of distilled water at 62°F.

Q2: Is this the same as an imperial gallon?
A: No, the imperial gallon (UK) is about 20% larger at approximately 277.42 cubic inches.

Q3: How many cubic inches are in a quart?
A: Since there are 4 quarts in a gallon, one quart equals 57.75 cubic inches (231/4).

Q4: What's the volume of a gallon in cubic feet?
A: One gallon equals approximately 0.13368 cubic feet (231/1728, since 1728 in³ = 1 ft³).

Q5: Does this apply to both liquid and dry gallons?
A: No, this is specifically for US liquid gallons. The US dry gallon is about 268.8 cubic inches.