1. What is a Volume in Gallons Calculator?

Definition: This calculator estimates the volume in gallons based on the dimensions of a rectangular space in inches.

Purpose: It helps professionals and DIYers determine liquid capacity of tanks, containers, or any rectangular space.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{gal} \) — Volume in gallons
• \( L \) — Length in inches
• \( W \) — Width in inches
• \( H \) — Height in inches

Explanation: The product of length, width and height gives cubic inches, which is converted to gallons (1 gallon = 231 cubic inches).

3. Importance of Volume Calculation

Details: Accurate volume calculation ensures proper liquid storage capacity, helps in chemical mixing ratios, and prevents overfilling containers.

4. Using the Calculator

Tips: Enter the length, width and height in inches. All values must be > 0. The result shows the volume in US gallons.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 231?
A: 231 cubic inches equals exactly 1 US liquid gallon, the standard conversion factor.

Q2: Can I use this for cylindrical containers?
A: No, this is for rectangular spaces only. For cylinders, use π × r² × h / 231.

Q3: Does this work for imperial gallons?
A: No, this calculates US gallons. For imperial gallons (UK), divide by 277.42 instead.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect rectangles. Real-world containers may vary slightly.

Q5: What if my measurements are in feet?
A: Convert feet to inches first (1 foot = 12 inches) or modify the formula to use 0.004329 for cubic feet to gallons.