Use this fish tank volume calculator to estimate aquarium water volume in litres or gallons from tank dimensions entered in centimetres, inches or feet. It helps customers in Malaysia calculate aquarium litres before using supported product guidance.
How to Calculate Aquarium Volume
Measure the aquarium's inside length, width or depth, and water height. Enter all three measurements in the same unit. The calculator shows maximum capacity and an estimated actual water volume based on the selected setup allowance.
Rectangle Tank Formula
For measurements in centimetres, multiply length × width × height, then divide by 1,000 to estimate litres. The interactive calculator also converts inches and feet before calculating.
Why Actual Water Volume May Be Lower
Substrate, rocks, equipment and space above the water line reduce the water actually held by the aquarium. Use the setup allowance that best represents the tank rather than assuming maximum capacity.
Common Tank Measurement Units
Use centimetres, inches or feet in the calculator. Results are displayed in litres and gallons so the same saved estimate can be used in supported product guidance.
Tank Volume Calculator
Aquarium Tank Volume Calculator
Use this fish tank volume calculator to estimate aquarium water volume in litres or gallons from inside dimensions entered in centimetres, inches or feet.
How to Calculate Aquarium Volume
Measure the aquarium's inside length, width or depth, and water height. Enter all three measurements in the same unit.
Rectangle Tank Formula
For centimetres, multiply length × width × height, then divide by 1,000 to estimate litres. The calculator converts inches and feet automatically.
Why Actual Water Volume May Be Lower
Substrate, rocks, equipment and space above the water line reduce the water actually held by the tank. Use the setup allowance that best represents your aquarium.
Common Tank Measurement Units
You can enter centimetres, inches or feet. Results are shown in litres and gallons and can be carried into supported product dosage guidance.
