When you're buying a new Amazon Kindle, unless you're looking at the base model which only comes in 8GB, you're going to be presented with a choice regarding how much storage space you want.

Both the Kindle Paperwhite and Kindle Oasis come in 8GB or 32GB memory options, with the latter costing more but giving you way more space on your device. If you're buying a new ereader, it can be hard to know if it's worth splashing out for more storage.

Don't fret, though, as this guide will explain to you just how much space each book on an Amazon Kindle takes up, so you can use your reading habits to work out how much space you need, and which Kindle model you should buy.