Volume Calculator in Gallons

Volume Formulas:

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

Select Shape:

Length:

inches

Width:

inches

Height:

inches

Volume (gallons):

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1. What is a Volume Calculator in Gallons?

Definition: This calculator estimates the volume in gallons for either rectangular or cylindrical containers based on their dimensions.

Purpose: It helps professionals and DIYers determine liquid capacity for tanks, containers, or any space that needs volume measurement in gallons.

2. How Does the Calculator Work?

The calculator uses one of two formulas based on 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
\( L \) — Length (inches, rectangular)
\( W \) — Width (inches, rectangular)
\( H \) — Height (inches, rectangular)
\( r \) — Radius (inches, cylindrical)
\( h \) — Height (inches, cylindrical)

Explanation: The calculator converts cubic inches to gallons (1 gallon = 231 cubic inches) for either rectangular or cylindrical shapes.

3. Importance of Volume Calculation

Details: Accurate volume calculation is essential for liquid storage, chemical mixing, aquarium sizing, and many industrial applications.

4. Using the Calculator

Tips: Select the shape (rectangular or cylindrical), enter the 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 1 US liquid gallon, which is the standard conversion factor.

Q2: Can I use feet instead of inches?
A: No, the calculator requires inches since the conversion factor (231) is based on cubic inches.

Q3: How accurate is the cylindrical calculation?
A: It's mathematically precise for perfect cylinders. Real-world tanks may have variations.

Q4: What about other shapes?
A: Currently supports only rectangular and cylindrical shapes. Other shapes require different formulas.

Q5: Does this work for US and UK gallons?
A: This calculator uses US gallons (231 cubic inches). UK gallons are different (277.42 cubic inches).