Fish Tank Calculator

There are a variety of different styles & shapes of aquariums. Some are standard popular shapes & in some cases, according to your needs, you can make custom made aquariums also. Here are some of the most popular fish tank shapes:

• Rectangular & Square Aquarium

It is the most popular & highest selling aquarium shape. Because it fits on any solid surface that can take the weight & size of an aquarium. Also, cleaning this aquarium is very easy.

• Bow Tanks

This aquarium gets its name from the shape of the front side which has a little curve. A special kind of stand is needed for this aquarium but it can be kept on large flat surfaces also.

• Wave Tanks

These types of aquariums are growing in popularity & get their name from their unique front shape. These aquariums can fit into large surfaces that can hold their shape. It is the most difficult shape to maintain & clean.

Calculating Aquarium Volume and Surface Area

The dimensions and shape of an aquarium directly have an influence on the surface area and volume. We have to consider the amount of gravel and sand that is in the tank so that we can consider the amount of water that should be in the aquarium.

Steps on Determining the Water Surface Area of a Fish Tank

How much fish you can keep in your aquarium is dependent on the oxygen content in the water & it is directly dependent on the surface area of the water. These are the steps to calculate the surface area of an aquarium:

1. For a rectangular shape, the surface area is calculated by multiplication of the length & the width of a tank.
2. For circular shape, the surface area is calculated by taking the diameter of a tank & squaring it and then multiplying by π/4.

Here, one important point to consider is that the measurements taken from the outside of the aquarium will also include the thickness of the glass & the total calculation will become wrong. Measurement should always be taken from inside the aquarium.

Simple Steps on Calculating the Fish Tank Surface Area

Here are the steps to calculate the Surface Area of a glass aquarium:

1. Take the perimeter of an aquarium from the inside & also measure the height.
2. Multiply height & the perimeter to get the surface area of a fish tank.
3. For the rectangular tank, the formula for perimeter is 2×(W+L), where W = width & L = length.
4. For the circular tank, the formula for perimeter is π multiplied by the inside diameter of a tank.

How Do I Calculate Aquarium Water Volume Manually?

The volume of a fish tank determines the maximum number of fish we can keep in a tank. Here is how to find the volume of a tank manual process:

1. Multiply the surface area of water by the height (taken from inside the tank) of a tank.
2. If the tank has gravel & rocks, then we need to calculate the volume of the area occupied by gravel & rocks. Then subtract this from the full volume.
3. The volume occupied by gravel & rocks changes as per the surface area of a base of a fish tank, height of gravel & coarseness of the material.
4. The formula for volume of gravel & rocks is given by :

Volume ≈ 0.6 × A × H (Coarse gravel)

≈ 0.75 × A × H (Medium gravel)

≈ 0.9 × A × H (Fine gravel)

How to Find out the Fish Tank Glass Surface Area in Simple Steps?

Steps to determine the glass surface area of your fish tank are listed here:

1. Find out the surface area of the inside of the fish tank using the steps mentioned above.
2. Now, take the measurements from the outside of the fish tank & calculate the surface area using the same formula.
3. Subtract the above two values to get the glass surface area of the fish tank.

Solved Example on Aquarium Fish Tank Volume Calculator

Example:

If a rectangular fish tank has dimensions of 22×15×20cm, it has fine gravel with a height of 2. Calculate the surface area & volume of a fish tank.

Solution:

First, we need to calculate the surface area of a tank

= length × width a tank

= 22 × 15

= 330 sq. cm

To calculate volume of a tank = (full volume of tank) – (volume of a gravel)

= (l × b × h) - (0.9 × A × H)

= (22 × 15 × 20) - (0.9 × 330 × 20)

= 6600 - 5940 = 660 sq cm

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FAQs on Aquarium Calculator for Different Tank Shapes

1. How many fish can I have in my tank calculator?

You can calculate the surface area by assuming 1 inch of each fish for every 12 square inches of the water surface area.

2. How many fish can I put in a 55 gallon?

The rule one-inch-per-gallon applies here. A rough estimate says that there can be 4 or 5 bottom-dwelling fish.

3. How many gallons is a 30×12×13 tank?

A 30x12x13 tank will be 20 Gallon.