- Measure the length, width, and height dimensions of your aquarium.
- Enter each fish tank dimension into the calculator. Don’t forget to enter whether it is inches or centimeters!
- Our aquarium volume calculator will output the fish tank size in US Gallons and Liters
Aquarium Volume Calculator
Aquarium Dimensions Volume Calculator
If you would like to calculate the weight of your aquarium water weighs about 8.34 pounds per gallon.
Don’t forget about the weight of the aquarium itself and everything else you will be putting in it such as gravel or rock
Glass aquariums start at around 11 pounds empty for a 10 gallon, all the way up to 400 pounds empty for a 265 gallon!