How to Calculate an Aquarium's Volume

The volume of your aquarium impacts everything from the number of fish you can keep to the size of pump and filter you need. It is therefore very important to measure the volume of your tank carefully. Determining the volume of your aquarium is not difficult, but you do need to use precise measurements to get an accurate result.

Things You'll Need

  • Measuring tape
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Instructions

    • 1

      Place the empty aquarium on a sturdy stand. Measure the height of the tank by placing the measuring tape at the bottom of the aquarium and pulling it up to the top.

    • 2

      Measure the length and width of the tank. Write down the measurements for the height, width and length of the tank.

    • 3

      Enter those figures into a volume calculator, such as the one provided by the First Tank Guide. The result is the volume of your tank in both cubic inches and gallons.