Tank Gallons per Inch Calculator

Gallons per Inch 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

Radius:

inches

Gallons per Inch:

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1. What is a Tank Gallons per Inch Calculator?

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

Purpose: It helps in estimating liquid volume at different levels in tanks, useful for inventory management, dosing calculations, and tank calibration.

2. How Does the Calculator Work?

The calculator uses one of these 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:

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

Explanation: The formulas calculate the cross-sectional area of the tank divided by 231 (cubic inches per gallon) to determine volume per inch of height.

3. Importance of Gallons per Inch Calculation

Details: Knowing gallons per inch helps in precise liquid level monitoring, inventory control, and process management in industrial, agricultural, and water treatment applications.

4. Using the Calculator

Tips: Select tank shape (rectangular or cylindrical), enter the required dimensions in inches, and click Calculate. All values must be > 0.

5. Frequently Asked Questions (FAQ)

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

Q2: Can I use this for oval or other shaped tanks?
A: No, this calculator is for rectangular or cylindrical tanks only. Other shapes require different formulas.

Q3: Does this account for tank thickness or internal structures?
A: No, this calculates theoretical volume. For precise measurements, account for tank walls and any internal components.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect geometric shapes. Real-world tanks may vary slightly due to manufacturing tolerances.

Q5: Can I calculate total tank capacity with this?
A: Yes, multiply gallons per inch by the total height of the tank to get full capacity.