Enter the dimensions of your aquarium and the thickness of the glass to calculate the weight of the water it can hold. This calculator helps you estimate the total weight of water your aquarium will support when filled.

Aquarium Weight Formula

The following formula is used to calculate the weight of water in an aquarium.

WW = ((L - 2 * GT) * (W - 2 * GT) * (H - 2 * GT) / 231) * 8.34

Variables:

  • WW is the water weight (pounds)
  • L is the length of the aquarium (inches)
  • W is the width of the aquarium (inches)
  • H is the height of the aquarium (inches)
  • GT is the glass thickness (inches)
  • Note: The formula assumes the density of water is 8.34 pounds per gallon and 1 gallon is equivalent to 231 cubic inches.

To calculate the weight of water in an aquarium, subtract twice the glass thickness from the length, width, and height to find the inner dimensions. Then, calculate the volume of water the aquarium can hold in cubic inches. Convert this volume to gallons and multiply by the weight of water per gallon to find the total weight.

What is Aquarium Weight?

Aquarium weight refers to the weight of the water that an aquarium can hold when filled to capacity. It is an important factor to consider for the structural integrity of the stand and the location where the aquarium will be placed. The weight of the water adds significant load, and it is crucial to ensure that the supporting structure can handle this weight safely.

How to Calculate Aquarium Weight?

The following steps outline how to calculate the Aquarium Weight.


  1. First, measure the length (L), width (W), and height (H) of the aquarium in inches.
  2. Next, measure the glass thickness (GT) of the aquarium in inches.
  3. Use the formula from above to calculate the water weight (WW).
  4. Finally, calculate the Aquarium Weight in pounds.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Length (L) = 48 inches

Width (W) = 18 inches

Height (H) = 24 inches

Glass Thickness (GT) = 0.5 inches