The length of an eBook is measured in words, not pages. Even with the leeway provided by eBooks, authors adhere to widely acknowledged book word count norms: 5,000-30,000 words for Kindle Singles (short-format eBooks). 5,000+ words for short tales or novels (middle-length eBooks). 10,000-20,000 words for long essays or nonfiction books (long-format eBooks). So, an eBook can range from 500 to 50,000 words long. The amount of content in an eBook depends on how much space the author needs to explain their idea and include examples. There are only so many words available on each page, so authors must make choices about which ideas to develop and support with evidence, character analysis, foreshadowing, etc. An eBook can be as detailed or as brief as you want it to be. Here are some examples of eBooks: Short stories: 20,000 words or less Middle-length pieces of nonfiction: 30,000-80,000 words Long works of fiction: 50,000+ words The length of an eBook will always be indicated at the beginning by using one of these four markers: KF (Kindle Single), MF (Kindle Feature), EDB (eBook-only edition of a print title), LB (Larson's Library)".