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Aquarium Water Volume Calculator

When buying a new fish tank, or, when considering whether or not you can add more fish safely to your current tank, it’s important to first know how much water volume your tank will hold. 


We often get asked questions from our customers on this topic - and that’s because it’s extremely important for a number of reasons, including:


  • Knowing how many fish you can safely keep in your tank 
  • Understanding how to treat the water with various dosages of chemicals 
  • Awareness of how often you should change or refresh the water to keep your fish healthy and happy.

To help you either decide on the size of aquarium you require, or to calculate whether you can home a brand new fish, we’ve developed a handy interactive tool, which allows you to calculate just how much water your aquarium can hold. 

Select Tank Shape & Measurement

Enter Dimensions below

(cm)
(cm)
(cm)

Enter Dimensions below

(cm)
The Width will be halved to find the radius

Enter Dimensions below

(cm)
The Width will be halved to find the radius
(cm)

Disclaimer: The above calculator is a tool which calculates the approximate capacity of water volume in your fish tank. It is designed to be used as a guide for this purpose only. Those using this tool for tank treatment do so at their own risk. Always follow the manufacturer’s instructions, and consider factors such as aquarium contents (substrates, ornaments) as well was water level and glass thickness.

Looking for the right-sized fish tank?

If you’re looking for the perfect aquarium then look no further than our range here at Aquacadabra. We have one of the largest ranges of fish tanks on offer in the UK, complete with a whole range of tank accessories including pumps, filters, decorations, cleaning products, chemicals and more. 

We stock aquariums from 10 litres in size, ideal for a couple of small freshwater or tropical fish, right up to huge 500 litre plus aquariums - a perfect home for dozens of stunning fish, plants, snails, shrimp and more. 

 

Browse the full range today