Tank Size Calculator Gallons

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 (gallons):

Definition: This calculator estimates the volume of liquid a tank can hold in gallons based on its dimensions and shape.

Purpose: It helps determine tank capacity for water storage, aquariums, fuel tanks, and other liquid containers.

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:

Explanation: The formulas convert cubic inches to gallons (1 gallon = 231 cubic inches).

Details: Accurate volume calculation ensures proper system design, chemical dosing, and storage capacity planning.

Tips: Select tank shape, enter dimensions in inches, and click Calculate. All values must be > 0.

Q1: Why divide by 231?
A: There are 231 cubic inches in one US gallon, so this converts the volume from cubic inches to gallons.

Q2: What about oval or irregular tanks?
A: For oval tanks, approximate as cylindrical. For complex shapes, break into simpler components.

Q3: Does this account for tank thickness?
A: No, use internal dimensions for accurate liquid capacity.

Q4: How accurate is this calculation?
A: It's mathematically precise for perfect geometric shapes with exact measurements.

Q5: Can I use feet instead of inches?
A: Convert feet to inches first (1 foot = 12 inches) for accurate results.