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27-chapter method

Three acts, each cut into three blocks of three chapters. Fill in 27 chapters and you have a plan.

Use it with your book's length

How it works

The 27-chapter method spread through writing YouTube and TikTok, made popular by author Kat O'Keeffe. It takes three acts and cuts each act into three blocks: a setup, a conflict and a resolution. Each block is three chapters. Three acts, times three blocks, times three chapters, makes 27.

It's a plan for chapters, so put your chapter count in the calculator. If your book has more or fewer than 27 chapters, the blocks stretch to fit.

Good for: New writers and anyone who plans by chapter. Works for any genre.

Watch out: Real books rarely have exactly 27 chapters. Use the blocks as a guide and let a chapter run long or split in two.

The 9 beats, and where they fall

BeatWhereIn 80,000 words
Act 1 setupMeet the hero and their world. Something disturbs it.0% to 11%0 to 8,889
Act 1 conflictThe hero reacts, tries something and deals with what happens.11% to 22%8,889 to 17,778
Act 1 resolutionPressure builds until the hero is pushed into the main story.22% to 33%17,778 to 26,667
Act 2 setupA new world, new rules and new people.33% to 44%26,667 to 35,556
Act 2 conflictThe midpoint twist lands and changes the goal.44% to 56%35,556 to 44,444
Act 2 resolutionThe hero commits to a plan, and it costs them.56% to 67%44,444 to 53,333
Act 3 setupThings fall apart. The lowest point.67% to 78%53,333 to 62,222
Act 3 conflictThe hero rallies and the final fight builds.78% to 89%62,222 to 71,111
Act 3 resolutionThe climax, and life after it.89% to 100%71,111 to 80,000

The places are rough guides, not rules. Plenty of good books move a beat by a chapter or two. Put in your own word count and chapters to see your book's numbers.

Other story shapes

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