๐พ Pets
Aquarium Calculator
Aquarium volume is usually quoted as the nominal tank size, but the real water volume is smaller once you account for glass thickness, substrate and decorations. Knowing the true volume matters because every medication and water treatment is dosed against it.
How it works
Tank length
Tank width
Tank height
Substrate depth
Fill level
Weekly water change
Nominal volume
Actual water volume
Actual water volume
Weight of the water
Water per weekly change
Frequently asked questions
How do I use the Aquarium Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.