Pardon the dust. We are remodeling. The calculators still work in the meantime. Enjoy!

## Welcome to our Hexagon Aquarium Tools. You can calculate three things here:

1. **Volume** of your hexagonal
fish tank

2. **Surface area** of your hexagon tank

3. **How Many Fish** your hex tank can support

*Hex calculators available in U.S. and metric units.*

### 1. Calculate Volume of a Hexagon Tank

#### Enter the width of one side and the height of a hexagonal aquarium to see the volume of your hexagon aquarium

#### U.S. Unit Calculator

#### Metric

### 2. Calculate Surface Area of Hexagon Tank

#### Enter the width of one side, in any units, of a hexagon aquarium to see the surface area of the aquarium.

This calculator will tell you how much surface area you have on the top of the hex aquarium, where gas exchange takes place. Whatever units you enter, the result will be in square units. For example, if you input inches, the result will give you square inches.

### 3. Calculate Fish Capacity of Hexagon Tank

#### Enter the surface area of your hexagon aquarium to estimate how many inches of fish your hexagon aquarium can support.

The surface area can be used to calculate how many fish your
tank can support. Generally, the tall, narrow format of a hexagonal
aquarium tank will not support as many fish as a traditional
wide-format rectangular tank. This is because the rate that oxygen
can diffuse into the water is limited by the surface area. Check our **How Many Fish? home page** for
the complete explanation behind these figures.

#### U.S. Units

#### Metric

**Do you know about cycling a new aquarium?** The
biggest mistake made by people setting up their first fish tank is
to not understand the concept of cycling. Learn more here on
our Aquarium Cycling page.