1. What is a Rectangular Tank Calculator (Gallons)?

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

Purpose: It helps engineers, plumbers, and DIYers determine the capacity of rectangular tanks, aquariums, or containers.

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
• 231 — Conversion factor (cubic inches per gallon)

Explanation: The dimensions are multiplied to get cubic inches, then divided by 231 to convert to gallons.

3. Importance of Tank Volume Calculation

Details: Accurate volume calculation ensures proper sizing for liquid storage, chemical dosing, and system design.

4. Using the Calculator

Tips: Measure the inside dimensions of your tank in inches. Enter all three dimensions (length, width, 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, the standard conversion factor.

Q2: Does this work for cylindrical tanks?
A: No, this is for rectangular tanks only. Use a different formula for cylinders.

Q3: Should I use inside or outside dimensions?
A: Always use inside dimensions for accurate volume calculation.

Q4: How do I convert to liters?
A: Multiply gallons by 3.78541 to get liters.

Q5: Does this account for tank contents?
A: No, this calculates total volume. Actual usable volume may be less.