How many words in a chapter?
For a nonfiction book, a common convention is about 4,000 words a chapter. Chapters from about 1,000 to 10,000 words are normal, and they do not need to match each other. The right length is whatever it takes to make the chapter's one point well.
The convention
The Scribe Method, Scribe's free book on writing nonfiction, gives the starting point: a common convention is that a nonfiction book is around 50,000 words, with 12 chapters averaging 4,000 words each. It is just as clear that there are no hard rules. Some books have 500-word chapters and others stretch to 10,000 (Everything you need to know about book chapters).
Use the convention to sanity-check a plan, not as a target to hit.
Work out your average chapter length
Put in your book's target length and your number of chapters. If you know how many words you write in a session, add that too.
Enter a total word count and a number of chapters.
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Not sure of the book's total yet? How long should a nonfiction book be? shows how to set it from your outline.
What decides a chapter's length
The Scribe Method names two things: how much you need to say, and the pace you want the book to have. In practice that comes down to:
- One idea per chapter. A chapter usually presents a single idea, explains one step in a process, or makes one argument. When it starts making a second point, that is often a second chapter.
- How much showing the idea needs. A simple point with one good example is short. A complex step with several cases, objections and a worked example is long.
- How your reader reads. Short chapters suit a reader who dips in between meetings. Longer ones suit a reader working through a method in order.
Checks for chapters at either end
The Scribe Method gives two simple guidelines:
- Under about 1,000 words: ask whether it is a complete idea or really part of another chapter.
- Over about 10,000 words: ask whether it would work better as two or more chapters.
Neither is a rule. A deliberately short chapter can land a point hard, and a long one can be right for a step that cannot be split.
Chapters can be different lengths
There is no need for every chapter to match. The Scribe Method's own example is a book with chapters of 5,000, 1,200, 3,000 and 1,000 words. Varying length to fit the ideas can make the book easier to read. What matters is that each chapter keeps its promise and stops.
Plan chapter lengths before you write
- Write each chapter's one-sentence thesis in your outline (see module 3, or build it in the outline builder).
- Next to each thesis, list the stories, examples and steps it needs.
- Give each chapter a rough word budget based on that list.
- Add them up and compare with the calculator above. If the total is far off what you expected, the outline is thin or overstuffed, and it is cheaper to fix now than after drafting.
A budget per chapter also makes the draft easier to schedule. The writing plan worksheet turns words per day into dates.
Questions
How many words is a typical chapter?
For nonfiction, a common convention is about 4,000 words: a book of around 50,000 words in 12 chapters. That is the figure The Scribe Method gives as a starting point, and it notes that some books have 500-word chapters and others run to 10,000.
How long is a chapter in pages?
It depends on the trim size, font, spacing and design, so the same chapter can come out at quite different page counts. Plan chapters in words. Your designer or printer can tell you pages once the layout is set.
Is 2,000 words too short for a chapter?
Not if it makes one complete point. Short chapters can give a book a quick pace. The Scribe Method's check is for chapters under about 1,000 words: ask whether it is a complete idea or really part of another chapter.
Is 10,000 words too long for a chapter?
It can work, but it is the point where The Scribe Method suggests asking whether the chapter would be better as two. Long chapters can feel heavy to a reader who wants to finish one in a sitting.
Do all chapters need to be the same length?
No. Chapters can differ to match the ideas in them, and variety can help the pace. Keep each chapter to one idea, fully explained, and let the length follow.
How many chapters should a nonfiction book have?
There is no rule. The Scribe Method's chapter page says most nonfiction books have between 5 and 20 chapters. Fewer than five can mean chapters hold too many ideas; more than 20 can mean they are fragmented.