How Long Should an Ebook Title Be?

Quick Answer: Keep the main title to two to six words. The subtitle can be longer. On Amazon KDP, the title and subtitle combined must be under 200 characters, including spaces and punctuation.

Short titles are easier to remember, easier to read on a thumbnail, and easier to recommend in conversation. The most successful non-fiction ebooks tend to follow a pattern: a brief, punchy main title, followed by a longer subtitle that provides context and keywords.

The Title and Subtitle Split

The main title is your hook. It should be short enough to read at a glance on a phone screen and memorable enough that someone could tell a friend about it. Two to six words is the range where most successful ebook titles fall. "Atomic Habits," "Deep Work," "The Lean Startup," and "Quiet" all follow this pattern.

The subtitle is where you add detail. It explains what the book is about, who it's for, and what the reader will gain. Subtitles are typically 8 to 15 words and include one or two natural keywords that readers might search for. A subtitle like "A Practical Guide to Building Good Habits and Breaking Bad Ones" tells both the reader and Amazon's search algorithm what the book covers.

Together, the title and subtitle on Amazon KDP must stay under 200 characters. Spaces and punctuation count toward that limit. Going over means your listing won't be accepted.

Why Shorter Titles Work Better

Ebook covers display as small thumbnails in search results and on mobile devices. A title with 10 or more words becomes unreadable at thumbnail size. Readers scroll past what they can't quickly parse.

Short titles are also easier to share by word of mouth. If someone reads your book and wants to recommend it, they're more likely to remember and repeat a two-word title than a twelve-word one.

Fiction titles tend to be even shorter than non-fiction. One or two words is common in genre fiction because the cover design and genre category do most of the communication work.

Bottom Line

Aim for two to six words in the main title and put the descriptive details in the subtitle. Stay under 200 characters combined for Amazon KDP. When in doubt, shorter is better. For more on title strategy, see Ebook Title Generation and Testing: What Actually Works.

Q: Does Amazon have a character limit for ebook titles? A: The title and subtitle combined must be under 200 characters on Amazon KDP. This includes spaces and punctuation. There is no separate character limit for the title field alone, but keeping the main title short is a best practice for readability.

Q: Should the subtitle include keywords? A: Yes, but naturally. One or two relevant keywords in the subtitle help with Amazon search discoverability. Avoid stringing together a list of keyword synonyms, which reads as spam and can result in your listing being flagged.