Calculate Gallons of Water

Water Volume Formulas:

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

Container Shape:

Length:

inches

Width:

inches

Height:

inches

Water Volume:

gallons

Definition: This calculator estimates the volume of water in gallons that a container can hold, based on its dimensions.

Purpose: It helps determine water capacity for tanks, pools, aquariums, and other containers.

The calculator uses different formulas based on container 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:

Details: Accurate volume calculations ensure proper water treatment, pump sizing, and structural support for containers.

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

Q1: Why divide by 231?
A: There are exactly 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 first (1 foot = 12 inches).

Q3: Does this account for container thickness?
A: No, use interior dimensions for accurate results.

Q4: What about irregular shapes?
A: For complex shapes, break them down into rectangular or cylindrical components.

Q5: Is this accurate for all liquids?
A: The volume calculation is the same, but weight varies by liquid density.