I’m often asked about the optimum Kindle eBook length should be. Unfortunately, a clear cut answer does not exist. However, it is possible to identify a range but before we do it is crucial to express the strong need to focus first on quality and second on length. In other words, depending on your writing style, readers can be entertained or helped with a low or high amount of words if in fact quality content is provided.
Assuming quality is the first priority I would suggest that a non-fiction be approximately 15,000 to 30,000 words. This is not a rule, rather a common range among helpful non-fiction books. If you are writing fiction then unless you’re selling a quick read, I would suggest a 30,000 word count minimum. Assuming you don’t have too many images or tables and your font is standard, it is reasonable to estimate that 250 words will generate a Kindle page.
When considering what your book length to aim for keep in mind that more pages has greater potential to earn you slightly more income. Again, it is imperative to reiterate that excessive words purely aimed at increasing the word count will not be helpful for you or your reader.
The greater revenue potential is caused by the Kindle Edition Normalized Pages (KENP), which is the amount of pages read by customers who borrow your book from Kindle Unlimited (KU) and the Kindle Owners’ Lending Library (KOLL). Each page read equates to a fraction of a penny so a book with a low amount of pages is less likely to derive significant royalties through this source. Conversely, a novel that is 100,000 words and can successfully hook readers until the end can offer great additional royalty potential.
Before closing, I’d like to add that for me personally the only time word count matters is when I set a goal to complete a certain amount of words within a writing session. Most of my writing sessions require 1000 words before stopping, however, I would not continue within one particular section of a book until I reached that number. Moreover, if my writing session brought me to my book’s conclusion then I’d shift focus to hiring an editor rather than adding more words to meet my 1000 word writing session quota. In other words, I never focused on adding words for the sake of increasing my word count.