Home Back

Calculate Gallons in a Rectangular Tank

Volume Formula:

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

inches
inches
inches

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Rectangular Tank Volume Calculator?

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

Purpose: It helps determine liquid capacity for rectangular containers, tanks, or aquariums.

2. How Does the Calculator Work?

The calculator uses the formula:

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

Where:

Explanation: The calculator multiplies the three dimensions to get cubic inches, then divides by 231 to convert to gallons.

3. Importance of Volume Calculation

Details: Accurate volume calculation is essential for proper tank sizing, chemical dosing, and system design in various applications.

4. Using the Calculator

Tips: Enter all dimensions in inches. Measure internal dimensions for accurate capacity calculations. All values must be > 0.

5. Frequently Asked Questions (FAQ)

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

Q2: Can I use feet instead of inches?
A: No, this calculator requires inches. For feet, multiply each dimension by 12 first.

Q3: Does this account for tank thickness?
A: No, use internal dimensions for capacity calculations. Subtract wall thickness if needed.

Q4: What about irregular shapes?
A: This calculator is for rectangular tanks only. Other shapes require different formulas.

Q5: How accurate is this calculation?
A: It's mathematically precise for perfect rectangles. Real-world factors like curvature may affect actual capacity.

Rectangular Tank Volume Calculator© - All Rights Reserved 2025