Home Back

Volume in Gallons of Rectangular Tank

Volume Formula:

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

inches
inches
inches
gallons

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is Volume in Gallons of Rectangular Tank?

Definition: This calculator estimates the volume of liquid a rectangular tank can hold, measured in gallons.

Purpose: It helps determine tank capacity for storage, industrial processes, or aquarium sizing.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

Explanation: The formula calculates the cubic inches of the tank's interior space and converts it to gallons.

3. Importance of Tank Volume Calculation

Details: Accurate volume calculation ensures proper sizing for storage needs, prevents overfilling, and helps with system design.

4. Using the Calculator

Tips: Measure the internal dimensions of your tank in inches. Enter length, width, and height. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 231?
A: 231 cubic inches equals 1 US liquid gallon - this is 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 adjust the formula to use 0.004329 for cubic feet to gallons.

Q3: Does this work for cylindrical tanks?
A: No, this is for rectangular tanks only. Use a different formula for cylinders.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect rectangles, but actual capacity may vary slightly due to tank construction.

Q5: What about tank thickness?
A: For external dimensions, subtract twice the wall thickness to get internal dimensions.

Volume in Gallons of Rectangular Tank© - All Rights Reserved 2025