This aquarium water volume calculator helps measure the exact amount of fish tank can hold, ensuring proper habitat conditions for aquatic life.
- A small 20″ x 10″ x 12″ aquarium, which holds about 10.41 gallons.
- A medium 30″ x 12″ x 18″ aquarium, holding approximately 28.13 gallons.
- A larger 48″ x 13″ x 21″ aquarium, with a volume of about 57.20 gallons.
- A big 72″ x 18″ x 24″ aquarium, containing around 134.68 gallons.
- A very large 96″ x 24″ x 30″ aquarium, holding about 299.29 gallons.
Imagine you have a rectangular tank measuring 24 inches long, 12 inches wide, and 18 inches tall. The calculator would use these dimensions to determine that your tank can hold approximately 22.5 gallons of water.
Aquarium Water Volume Calculator
| Length (inches) | Width (inches) | Height (inches) | Volume (gallons) | Volume (liters) |
|---|---|---|---|---|
| 20 | 10 | 12 | 10.42 | 39.48 |
| 24 | 12 | 16 | 20.13 | 76.21 |
| 28 | 13 | 18 | 28.14 | 106.25 |
| 36 | 18 | 24 | 67.34 | 255.48 |
| 42 | 24 | 48 | 119.9 | 453.53 |
| 30 | 15 | 20 | 15.98 | 60.55 |
| 40 | 20 | 30 | 34.64 | 131.32 |
| 50 | 25 | 36 | 63.81 | 241.05 |
| 60 | 30 | 40 | 104.12 | 394.10 |
| 70 | 35 | 42 | 145.73 | 551.59 |
Fish Tank Volume Calculation Formula
Volume = Length × Width × HeightThis formula gives the volume in cubic units. To convert to gallons or liters:
- For gallons: Divide the result by 231 (cubic inches in a gallon)
- For liters: Multiply the result (in cubic centimeters) by 0.001
Consider a tank measuring 30 inches × 12 inches × 18 inches.
Calculate volume: 30 × 12 × 18 = 6,480 cubic inches
Convert to gallons: 6,480 ÷ 231 ≈ 28.05 gallons
Aquarium Tank Size Chart
| Shape | Length (cm) | Width (cm) | Height (cm) | Volume (L) | Volume (gallons) |
|---|---|---|---|---|---|
| Rectangular | 60 | 30 | 40 | 72 | 19.0 |
| Rectangular | 45 | 20 | 20 | 18 | 4.8 |
| Rectangular | 120 | 60 | 50 | 360 | 95.0 |
| Corner Pentagon | 60 | 30 | 45 | 76 | 20.1 |
| Bow Front | 80 | 30 | 50 | 120 | 31.7 |
| Cylinder | 40 | N/A | 60 | 75 | 19.8 |
| Flat Back Hexagon | 50 | 25 | 35 | 45 | 11.9 |
| Quarter Cylinder | 30 | N/A | 50 | 35 | 9.2 |
How to Calculate Aquarium Water Volume?
To calculate your aquarium’s water volume:
Measure dimensions: Use a tape measure for length, width, and height in inches.
Apply the formula: Multiply length × width × height.
Convert units: Divide by 231 for gallons or multiply by 0.001 for liters.
For a tank measuring 36″ × 18″ × 24″:
Volume = 36 × 18 × 24 = 15,552 cubic inches
Gallons = 15,552 ÷ 231 ≈ 67.3 gallons
How Many Gallons is a 4 ft Long Fish Tank?
Therefore, a typical 4 ft long fish tank holds about 120 gallons.
Let’s assume a common ratio:
For a 48" × 24" × 24" tank:- Volume = 48 × 24 × 24 = 27,648 cubic inches
- Gallons = 27,648 ÷ 231 ≈ 119.7 gallons
How Many Litres in a 4ft by 2ft Fish Tank?
A 4ft by 2ft fish tank typically holds about 453 liters.
To calculate liters for a 4ft (48 inch) by 2ft (24 inch) tank, we need the height.
Let’s assume a 24-inch height:
- Volume = 48 × 24 × 24 = 27,648 cubic inches
- Convert to cubic centimeters: 27,648 × 16.387 = 453,060 cm³*
- Liters = 453,060 × 0.001 ≈ 453 liters*
2 Feet by 1 Feet Aquarium Water Capacity in Litres
A 2ft by 1ft aquarium typically holds about 85 liters.
For a 2ft (24 inch) by 1ft (12 inch) tank, let’s assume a common height of 18 inches:
Volume = 24 × 12 × 18 = 5,184 cubic inches
Convert to cubic centimeters: 5,184 × 16.387 = 84,944 cm³
Liters = 84,944 × 0.001 ≈ 84.9 liters
How Many Litres in a 3ft by 2ft Fish Tank?
A 3ft by 2ft fish tank typically holds about 340 liters.
For a 3ft (36 inch) by 2ft (24 inch) tank, assuming a height of 24 inches:
Volume = 36 × 24 × 24 = 20,736 cubic inches*
Convert to cubic centimeters: 20,736 × 16.387 = 339,795 cm³
Liters = 339,795 × 0.001 ≈ 339.8 liters
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