Calculate Gallon in Tank Volume

Tank Volume Formulas:

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

Tank Shape:

Length:

inches

Width:

inches

Height:

inches

Tank Volume:

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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.

Purpose: It helps determine the capacity of rectangular or cylindrical tanks for various applications like water storage, fuel tanks, or aquarium sizing.

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:

\( V_{gal} \) — Volume in gallons
\( L, W, H \) — Length, width, height in inches (rectangular tank)
\( r, h \) — Radius and height in inches (cylindrical tank)
231 — Cubic inches per gallon conversion factor

3. Importance of Tank Volume Calculation

Details: Accurate volume calculations ensure proper sizing for storage needs, help with dosing treatments (like in pools/aquariums), and prevent overfilling.

4. Using the Calculator

Tips:

Select tank shape (rectangular or cylindrical)
Enter dimensions in inches
All values must be positive numbers
For cylindrical tanks, measure radius (half of diameter)

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 231?
A: There are 231 cubic inches in one US gallon, which is the standard conversion factor.

Q2: Can I use feet instead of inches?
A: Yes, but multiply your foot measurements by 12 to convert to inches first.

Q3: How accurate is this calculation?
A: It provides theoretical maximum volume. Actual capacity may be less due to tank walls, internal components, or recommended fill levels.

Q4: Does this work for irregularly shaped tanks?
A: No, this calculator is for standard rectangular or cylindrical tanks only.

Q5: What about metric measurements?
A: Convert cm to inches (1 cm = 0.3937 inches) or use liters (1 gallon = 3.78541 liters) in your final calculation.