Home Back

Volume in Gallons Calculator of a Tank

Tank Volume Formulas:

\[ V_{gal} = \frac{L \times W \times H}{231} \text{ (rectangular)} \] \[ V_{gal} = \frac{\pi \times r^2 \times h}{231} \text{ (cylindrical, inches)} \]

inches
inches
inches

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is a Tank Volume Calculator?

Definition: This calculator estimates the volume of liquid a tank can hold in gallons, based on its dimensions and shape.

Purpose: It helps determine tank capacity for storage, industrial applications, or aquarium setups.

2. How Does the Calculator Work?

The calculator uses different formulas based on tank shape:

\[ V_{gal} = \frac{L \times W \times H}{231} \text{ (rectangular)} \] \[ V_{gal} = \frac{\pi \times r^2 \times h}{231} \text{ (cylindrical)} \]

Where:

Explanation: The calculator first computes cubic inches, then converts to gallons by dividing by 231.

3. Importance of Tank Volume Calculation

Details: Accurate volume calculations ensure proper sizing for liquid storage, chemical processing, and system design.

4. Using the Calculator

Tips: Select tank shape, enter dimensions in inches, and click Calculate. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 231?
A: 231 cubic inches equals one US liquid gallon (standard conversion factor).

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

Q3: What about other units like liters?
A: First calculate gallons, then multiply by 3.78541 to convert to liters.

Q4: Does this account for tank thickness?
A: No, this calculates internal volume. For external dimensions, subtract wall thickness.

Q5: How accurate is this for irregular shapes?
A: These formulas are for regular shapes. For irregular tanks, use more advanced methods.

Volume in Gallons Calculator of a Tank© - All Rights Reserved 2025