Chapter titles and headings in nonfiction
A novel can call its chapters One, Two, Three and lose nothing. The reader is going straight through, in order, and a chapter title is at most a small pleasure.
Nonfiction does not work that way. Your reader arrives at the contents page before buying, dips in at chapter six a week later, and comes back a year on to find the one thing they remember. The headings are the whole navigation system. They do real work, and repay being written as carefully as the prose.
Specific sells. Clever does not
Someone browsing reads your contents page as a summary of what they will get, which is the moment a chapter title has to earn its place.
"Why your first draft is too long" tells a reader exactly what is inside. "Cutting to the bone" tells them nothing until they have already read the chapter, which is the wrong way round. The clever title is the one you will be most attached to, and it is the one costing you the sale.
- Say the thing. A title that states the chapter's claim or question is doing the work. Wit is fine, but only on top of clarity, never instead of it.
- Use the reader's words. The phrase they would type into a search box beats the phrase you coined in the drafting.
- Keep them parallel. If four chapters begin with a question and the fifth is a noun phrase, the contents page looks unplanned. Pick a pattern and hold it.
- Watch the length. A title that runs to fifteen words will not fit a running head, and you will be inventing a short form later anyway.
The same argument applied to the cover is in Choosing a title that can be found and remembered.
Decide your levels, then hold them
This is the part that actually goes wrong. Not the naming — the hierarchy.
Decide, before you typeset, how many levels your book has: chapter, section, subsection. Three is plenty for most nonfiction. A fourth level is nearly always a signal that the structure needs work rather than another heading size — either the material wants splitting into two chapters, or the deepest level is a list pretending to be headings.
Then hold to it. The common failure is a book where level two in chapter three is set like level three in chapter seven, because they were written months apart. The reader does not consciously notice, but they lose the sense of where they are, and a reader who is lost stops trusting the book.
Write your headings out as a plain outline, all of them, in one list. Every inconsistency shows up immediately in that view and almost never shows up while you are reading a chapter.
In the Interior Formatter. It detects chapter starts even in a .docx with no styles applied, and builds the contents from the real chapter structure it found — so the headings you set are the navigation your reader actually gets. Start your interior → · about the Interior Formatter
Distinct at a glance, from three tools
Each level has to be tellable from the others in the second before the reader reads it. The distinction should come from size, weight and space — not from a parade of different typefaces.
A chapter title is large and stands on its own opening page. A section heading is noticeably smaller, often bold or small caps, with generous space above. A subsection can be smaller still, or the same size as the body set in italic or bold, sometimes run into the first line of its paragraph. That is three levels out of one typeface and it will be clearer than three faces doing the same job.
Be decisive about the steps between levels. If level two and level three differ by a single point, they read as the same level set badly. Make the jump obvious or merge the two.
The space rule that fixes most amateur pages
Space above a heading must exceed space below it. More above, less below, always.
A heading belongs to the text it introduces. When the gaps are equal — or worse, larger underneath — the heading floats between two blocks and the reader cannot tell which one it labels. Sitting closer to the text that follows, it attaches itself to that text, which is what it means.
This single rule corrects more self-set pages than any other, and it costs nothing to apply. What matters is not the exact proportion but that the difference is visible at a glance.
Two related rules come with it. A heading never sits alone at the foot of a page — if at least two lines of its text cannot follow it, the heading moves to the next page. And headings should not force extra leading into the surrounding lines, because a text block that no longer aligns with the one facing it is a fault readers feel without diagnosing: see Widows, orphans and rivers: the faults readers feel.
Numbered sections, and when they pay
Numbering — 3.1, 3.2, 3.2.1 — looks authoritative and is usually unnecessary. It earns its keep in exactly one situation: when readers need to cross-reference. Reference books, instructional material, textbooks and academic writing all send the reader from one place to another, and "see 7.3" is precise in a way "see the section on inheritance" is not.
A trade nonfiction book, read mostly front to back, gains nothing from it and takes on a slightly technical air. If you do number, number every level you number at all, and never mix a numbered scheme with an unnumbered one inside the same book. Where readers need to find a specific term rather than a section, an index serves them better — Does your nonfiction book need an index?.
Your chapter title goes in the running head
In fiction the running head usually carries the author's name and the book's title. Nonfiction normally sets the book title on the left-hand page and the chapter title on the right, and that is what makes the book findable when somebody flips through it looking for the part they half remember.
It is also why an overlong chapter title has a downstream cost: it will need a short form that still means something. The full treatment is in Running heads and page numbers. If your book also divides into larger movements, Parts, sections and the pages between chapters covers that layer.
Typeset your book
The Interior Formatter is free to use: name your book, bring your manuscript, and it sets real pages you can read before you commit to anything. You only pay when you want the files without the preview watermark.
Next: Does your book need a table of contents? · Also in this guide: Running heads and page numbers · Chapter openings and scene breaks · Sidebars, boxes and pull quotes