1. What is the Formula for Gallons of Water?

Definition: This calculator converts cubic inches of water to gallons using the standard conversion factor.

Purpose: It helps in various applications where water volume needs to be converted between cubic inches and gallons.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{gal} \) — Volume in gallons
• \( V \) — Volume in cubic inches

Explanation: There are exactly 231 cubic inches in one US gallon, so dividing cubic inches by 231 converts to gallons.

3. Importance of Water Volume Conversion

Details: Accurate volume conversion is essential for water system design, chemical mixing, tank sizing, and many engineering applications.

4. Using the Calculator

Tips: Simply enter the volume in cubic inches. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 231 cubic inches per gallon?
A: This is the standard US gallon volume defined as exactly 231 cubic inches.

Q2: Is this for US gallons or imperial gallons?
A: This calculator uses US gallons (231 in³). Imperial gallons are different (277.42 in³).

Q3: Can I use this for other liquids besides water?
A: Yes, as long as you're converting volume units (not accounting for density or weight).

Q4: How do I convert gallons back to cubic inches?
A: Multiply gallons by 231 to get cubic inches.

Q5: What's the most common use for this conversion?
A: Frequently used in plumbing, aquarium sizing, and industrial tank calculations.