Calculate Tank Volume in Gallons per Inch

Tank Volume Formulas:

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

Tank Shape:

Length:

inches

Width:

inches

Tank Volume (gallons per inch):

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1. What is Tank Volume in Gallons per Inch?

Definition: This calculation determines how many gallons of liquid a tank holds per inch of height, based on its dimensions.

Purpose: It helps in monitoring liquid levels, calibrating measurement devices, and planning tank usage.

2. How Does the Calculator Work?

The calculator uses different formulas depending on tank shape:

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

Where:

\( V_{gal/in} \) — Volume in gallons per inch
\( L \) — Length of rectangular tank (inches)
\( W \) — Width of rectangular tank (inches)
\( r \) — Radius of cylindrical tank (inches)
231 — Cubic inches per gallon conversion factor

3. Importance of This Calculation

Details: Knowing gallons per inch allows for precise liquid measurement without full tank calibration, helps in inventory management, and supports process control.

4. Using the Calculator

Tips:

Select tank shape (rectangular or cylindrical)
Enter dimensions in inches
All values must be positive numbers

5. Frequently Asked Questions (FAQ)

Q1: Why 231 cubic inches per gallon?
A: This is the standard conversion factor (1 US gallon = 231 cubic inches).

Q2: How do I measure tank dimensions?
A: Measure inside dimensions at the liquid level. For cylindrical tanks, measure diameter and divide by 2 for radius.

Q3: Does this work for irregularly shaped tanks?
A: No, this calculator is for regular rectangular or cylindrical tanks only.

Q4: Can I use this for metric measurements?
A: No, this calculator uses inches and gallons. Convert metric measurements first (1 inch = 2.54 cm, 1 gallon ≈ 3.785 liters).

Q5: How accurate is this calculation?
A: It's mathematically precise for perfect geometric shapes. Real-world tanks may vary slightly due to construction tolerances.