🐠 Aquarium Volume Calculator
Calculate aquarium volume in gallons and liters from dimensions in inches.
How to Calculate Aquarium Volume
For a rectangular aquarium, multiply length x width x height in inches to get cubic inches, then divide by 231 to convert to US gallons. One US gallon equals 231 cubic inches or 3.785 liters. Remember that decorations, substrate, and equipment reduce the actual water volume.
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