Volume of a Rectangle in Gallons

Rectangle Volume Formula:

\[ V_{gal} = \frac{L \times W \times H}{231} \]

Volume (gallons):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Volume of a Rectangle in Gallons?

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

Purpose: It helps determine liquid capacity of rectangular containers like aquariums, tanks, or pools.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ V_{gal} = \frac{L \times W \times H}{231} \]

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 sizing of containers, correct chemical dosing, and efficient space utilization.

4. Using the Calculator

Tips: Enter all dimensions in inches. Measurements should be inner dimensions for containers. All values must be > 0.

5. Frequently Asked Questions (FAQ)

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

Q2: Can I use feet instead of inches?
A: Yes, but first convert feet to inches (1 foot = 12 inches) or modify the formula to divide by 0.13368 instead.

Q3: Does this work for irregular shapes?
A: No, this is only for perfect rectangular prisms. Use different formulas for cylinders, spheres, etc.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect rectangles. Real-world containers may have slightly different capacities due to manufacturing variations.

Q5: What about UK gallons?
A: UK gallons are different (1 UK gallon = 277.42 cubic inches). Use a different calculator for UK measurements.