Aquarium Calculator - Calculate Fish Tank Volume
Updated May 13, 2020
Author: Mike - FishLore Admin
Social Media: 
It is important to know the your aquarium size so that you can figure out what fish you can keep in it.
Ideally, you have researched your fish first and then picked your tank size to meet their needs.
In your research you will come across articles written by people using a different measuring system than you (english or metric) and the converters on this page can quickly help you perform these conversions.
There are several calculators on this page and you can use the quick links below to jump to the one you need.
Quick Jump Menu:*Note: aquarium volume will most likely be less than the above calculated numbers due to water displacement from sand, gravel, driftwood, decorations, tank inhabitants, etc.
Next: Get Fish Stocking Suggestions for aquariums this size.*Note: aquarium volume will most likely be less than the above calculated numbers due to water displacement from sand, gravel, driftwood, decorations, tank inhabitants, etc.
For cylinder style aquarium stocking ideas: 3 Gallon Cylinder ideas?
*Note: aquarium volume will most likely be less than the above calculated numbers due to water displacement from sand, gravel, driftwood, decorations, tank inhabitants, etc.
For hexagon stocking ideas: Fish that do well in a hexagon tank
Be sure to check out the aquarium cycle article for more details and tips on fishless cycling!
Need help with fishless cycling? Post a thread in the aquarium nitrogen cycle forum.
Site References :
Wikipedia - for some of the formulas used.
Aquarium Setup Articles
Learn how to setup a freshwater aquarium, from start to finish.
Contrary to what you may have heard, setting up and running a saltwater aquarium is not difficult. Read this to find out how easy it really is to have a saltwater tank.
If you want to set up the ultimate aquarium, try your hand at setting up a reef tank!
Popular Fish Profiles
The Betta is ubiquitous and is a favorite for many fish keepers.
The Glofish were genetically modified with the purpose to detect environmental pollution. Scientists were able to inject a fluorescent protein gene (from marine organisms) into the zebra danio embryos to create the glofish.
A pricey tang and often sought after by hobbyists. Don't mix with other tangs and keep them in large aquariums.
