To format a nonfiction book for print, use a 6”x9” trim size (the industry standard for business, self-help, and how-to), set body text at 10.5-11.5pt serif with 1.35-1.5x line spacing, and build a clear 3-level heading hierarchy pairing sans-serif headings with serif body text. A 70,000-word nonfiction book at 6x9 runs roughly 250-280 pages and costs about $4.45 to print on KDP. Nonfiction formatting is fundamentally about navigation — your readers are scanning for specific information, flipping between sections, referencing tables, and studying figures. The interior has to support all of that.

Most formatting guides are written with fiction in mind. This one isn’t. Here’s how to format a nonfiction book for print that looks professional, reads clearly, and meets the technical requirements of KDP and IngramSpark.

Trim size for nonfiction

Nonfiction runs larger than fiction. The extra page width accommodates wider tables, figures with captions, and the heading hierarchy that nonfiction demands.

6” x 9” is the standard for most nonfiction: business books, self-help, popular science, how-to guides, and professional development. It’s what readers expect when they pick up a nonfiction paperback. Over 70% of traditionally published nonfiction uses this size, and both KDP and IngramSpark list it as one of their most popular trim options.

7” x 10” is for workbooks, textbooks, technical manuals, and anything with complex tables, diagrams, or wide code listings. If your content regularly needs more horizontal space than 6x9 provides, go to 7x10 rather than fighting your layout on every other page.

5.5” x 8.5” works for narrative nonfiction, memoir, essay collections, and biography. These read more like novels — flowing prose without heavy structural elements — and a slightly smaller trim reflects that. It also keeps page counts higher, which can make a shorter book feel more substantial.

The trim size you pick affects your printing cost, your margin requirements, and your page count. A 70,000-word nonfiction book at 6x9 will run roughly 250-280 pages. The same book at 5.5x8.5 might hit 300-330. Use the KDP Book Calculator to see exact costs for your word count at different trim sizes before you commit.

Typography: the heading hierarchy is everything

In fiction, typography is about readability. In nonfiction, it’s about readability and structure. Your readers need to instantly distinguish an H1 from an H2 from an H3 — and from body text. If your heading levels blur together, your book becomes harder to navigate and feels amateurish.

Body text

Use a serif font for body text. Nonfiction readers spend long stretches reading dense information, and serif fonts remain the most readable choice for sustained print reading.

  • Source Serif — A modern workhorse designed for extended reading. Clean, professional, with excellent weight variations.
  • Minion — Designed by Robert Slimbach specifically for book work. Compact without feeling cramped.
  • Palatino — Wider letterforms that give your text a more open, approachable feel. Good for books where readability is paramount.

Set body text at 10.5-11.5pt with 1.35-1.5x line spacing. Nonfiction can lean slightly toward the tighter end of that range — your readers are processing information, not savoring prose, and tighter leading keeps related content visually grouped.

Headings

This is where nonfiction diverges sharply from fiction. You need a clear visual hierarchy, and the most effective approach is to pair a sans-serif heading family with your serif body text.

  • Source Sans — The natural companion to Source Serif. Clean, highly legible at all sizes.
  • Alegreya Sans — Warm and humanist. Pairs well with Palatino or Minion.

Build your hierarchy with distinct size, weight, and spacing differences:

  • H1 (Chapter title): 22-28pt, bold, generous space above and below
  • H2 (Section heading): 16-18pt, bold or semibold, moderate space above
  • H3 (Subsection): 12-14pt, bold or italic, slightly more space above than a normal paragraph

The test: if you squint at a page and can’t immediately tell which level a heading belongs to, your hierarchy isn’t strong enough. Adjust size, weight, or spacing until each level is unambiguous. Cambric’s nonfiction templates come with pre-built 3-level heading hierarchies that pair sans-serif headings with serif body text, with consistent sizing, weight, and spacing already dialed in — so you get a professional hierarchy without manually configuring each level.

Preview how these fonts look at real book sizes with the Book Font Preview tool before committing to a pairing.

Table of contents: not optional

In fiction, the table of contents is a formality. In nonfiction, it’s a critical navigation tool. Readers use it actively — flipping to the TOC to find a specific chapter, scanning it to decide whether to buy the book, referencing it while reading to understand how the current section fits into the whole.

Include accurate page numbers. This sounds obvious, but it’s where a lot of self-published nonfiction fails. If you’re generating your PDF from a tool, make sure the TOC page numbers update when your content changes. If you’re working manually, the TOC is the last thing you finalize.

Consider including sub-sections. For a 10-chapter business book, listing just chapter titles is fine. For a 30-chapter reference guide or a technical manual, including H2-level entries under each chapter makes the TOC dramatically more useful. Indent sub-entries and set them in a smaller size or regular weight to differentiate them from chapter titles.

Dot leaders (the row of dots connecting a title to its page number) are the traditional convention, and they work. They guide the eye across the page. Don’t replace them with nothing — a TOC without leaders forces the reader to trace each line with their finger.

Length: A nonfiction TOC can run 2-4 pages without apology. If your book has a complex structure, own it. A long, well-organized TOC tells readers “this book is thorough and you’ll be able to find things.”

Figures and images

Many nonfiction books include diagrams, charts, photographs, or illustrations. Getting these right in print requires attention to resolution, color, and captioning.

Resolution

Every image in your print interior must be at least 300 DPI at its printed size. An image that looks sharp on screen at 72 DPI will print blurry and unprofessional. If you’re using charts from a presentation or screenshots from a website, you almost certainly need to recreate them at print resolution.

For a figure that prints 4 inches wide in a 6x9 book, you need the image file to be at least 1200 pixels wide (4” x 300 DPI).

Grayscale vs. color

Black-and-white interiors cost significantly less to print than color. For KDP, a 300-page 6x9 book with a black-and-white interior costs roughly $4.85 to print; the same book in premium color costs over $12. At a $16.99 list price with a 60% royalty rate, that’s the difference between a $5.34 royalty and no royalty at all. That difference comes directly out of your margin.

If your book can work in grayscale, design for it from the start. Don’t design charts in color and convert later — you’ll lose legibility. Color-coded pie charts become indistinguishable gray wedges. Use patterns, labels, and value contrast instead.

If your book genuinely requires color (art books, cookbooks, medical references), budget for it — but know that your retail price will need to be significantly higher.

Captions

Every figure should have a caption. Format them consistently:

  • Figure number in bold (“Figure 3.2”), followed by the caption text in regular or italic
  • Smaller than body text (9-10pt)
  • Placed below the figure, not above
  • Numbered sequentially within each chapter (Figure 3.1, 3.2, 3.3) for easy cross-referencing

Tables

Tables are one of the hardest elements to format well in print. They need to be readable, consistent, and they can’t overflow your margins.

Formatting basics

  • Header rows should be visually distinct — bold text, a background tint, or a heavier rule below. The reader must be able to identify the header at a glance.
  • Consistent alignment within columns: left-align text, right-align numbers, center short labels
  • Adequate cell padding so content doesn’t feel cramped
  • Alternating row shading (very light gray) can improve readability for wide tables, but it’s not required

Wide tables

When a table is too wide for your text block, you have three options:

  1. Reduce the font size to 8-9pt. This works for small overflows but becomes unreadable quickly.
  2. Rotate the table 90 degrees so it prints in landscape orientation on a portrait page. The table header should face the binding edge. This is a standard convention in technical publishing and readers understand it.
  3. Split the table across two pages or restructure it so it fits. Sometimes a wide table is really two narrower tables.

Don’t let a table overflow into your margins. It will be clipped by the printer and it looks unprofessional.

Callout boxes and sidebars

Nonfiction books frequently use callout boxes to highlight tips, warnings, key takeaways, or supplementary information. These break up dense text and give readers quick-reference touchpoints.

Formatting approaches:

  • Bordered box with a light background tint and a slightly smaller font size. The most common approach.
  • Indented block with a vertical rule on the left edge. Cleaner, less visually heavy.
  • Icon-based callouts with a small symbol (a lightbulb for tips, an exclamation mark for warnings) in the margin or at the start of the box.

Rules for callouts:

  • Keep them short. A callout that runs longer than half a page should probably be regular body text.
  • Don’t overuse them. If every other page has a callout box, they stop standing out.
  • Be consistent with styling. All “tip” boxes should look the same. All “warning” boxes should look the same. If you use three types, each should be visually distinct.
  • Set callout text in a slightly smaller size (9.5-10pt if your body is 11pt) to signal that this is supplementary content.

Lists

Nonfiction uses a lot of lists. Format them deliberately.

Bulleted lists for items with no inherent order. Use a simple bullet, not a decorative symbol. Indent by 0.25-0.5 inches from the body text margin.

Numbered lists for sequential steps, ranked items, or anything where order matters. Use arabic numerals followed by a period.

Spacing: Add a small amount of space between list items (2-4pt) to make each item scannable. Don’t add as much space as you would between paragraphs — the list should read as a unit.

Consistency: If your first list item is a complete sentence with a period, all items in that list should be complete sentences with periods. If it’s a fragment, they should all be fragments.

Front matter for nonfiction

Nonfiction front matter has more components than fiction, and the order matters.

The standard sequence:

  1. Half title page — Just the book’s title, no subtitle or author name
  2. Title page — Full title, subtitle, author name, publisher
  3. Copyright page — Copyright notice, ISBN, edition info, legal disclaimers
  4. Dedication (optional)
  5. Table of contents
  6. List of figures / List of tables (if applicable)
  7. Foreword — Written by someone other than the author. If you have a foreword by a notable person, it goes here.
  8. Preface — Written by the author. Explains why you wrote the book, your qualifications, or the book’s scope.
  9. Acknowledgments — Can go in front or back. Front matter placement signals “these contributions were essential to the book.”
  10. Introduction — This is not Chapter 1. An introduction sets context, explains how to use the book, or provides background. Chapter 1 is where the actual content begins.

Front matter pages are traditionally numbered with lowercase Roman numerals (i, ii, iii, iv). Arabic numbering (1, 2, 3) starts with Chapter 1. This is a strong convention in nonfiction publishing — codified in the Chicago Manual of Style, now in its 18th edition — and following it signals professionalism. For the complete set of page numbering rules, see our dedicated guide.

Back matter

Nonfiction back matter serves a reference function. It’s where readers go to verify, explore, and dig deeper.

  • Appendices — Supplementary material, detailed data, extended examples, worksheets. Label them Appendix A, Appendix B, etc.
  • Notes / Endnotes — If you use endnotes instead of footnotes, they go here, organized by chapter.
  • Bibliography / References — Cited sources, recommended reading. Use a consistent citation style (APA, Chicago, etc.) throughout.
  • Index — For reference-heavy nonfiction, an index is expected. Creating a professional index is a specialized skill; many authors hire an indexer (typical cost: $3-6 per book page, so $750-$1,500 for a 250-page book). If your book is under 200 pages or is primarily narrative, you can skip the index.
  • About the Author — Brief professional bio relevant to the book’s subject matter. In nonfiction, your credentials matter — include them.
  • Also By — Other books by the author, organized by topic or series.

Running headers

Nonfiction running headers serve a navigational purpose. When a reader flips through the book looking for a specific section, the running headers tell them where they are.

The most common approach for nonfiction:

  • Verso (left page): Chapter title or book title
  • Recto (right page): Section title or chapter title

Our running headers and footers guide covers these conventions in detail, including when to suppress headers on specific pages. If your chapters have clear, descriptive titles (“Chapter 5: Building Your First Campaign”), use the chapter title on verso and the current section heading on recto. This gives the reader maximum navigational information.

Standard rules:

  • No running header on the first page of a chapter
  • No running header on blank pages, part title pages, or pages with full-page figures
  • Set in small caps or a smaller size (8-9pt) to keep them unobtrusive
  • Centered or aligned to the outside margin — both conventions are standard

Margins

Nonfiction at 6x9 can afford generous margins, and it should use them. Wide margins make dense content less intimidating and give the text room to breathe.

For a 6x9 nonfiction book (250-350 pages):

  • Inside (gutter): 0.75”-0.9” — Wider than fiction because nonfiction readers hold books open longer, referencing specific pages
  • Outside: 0.6”-0.75”
  • Top: 0.7”-0.8”
  • Bottom: 0.8”-0.9”

The bottom margin should be larger than the top. This places the text block slightly above center on the page, which is a centuries-old typographic convention that still feels right.

If your book exceeds 400 pages, increase the inside margin to at least 0.9” to prevent text from disappearing into the binding. KDP’s minimum inside margin jumps to 0.625” at 301 pages and 0.75” at 501 pages — but those are minimums, and comfortable reading requires at least 0.125” above them. The KDP Book Calculator shows exact margin requirements and printing costs for any page count at 6x9 or other nonfiction trim sizes.

The general KDP process

The technical details of uploading your formatted PDF to KDP — bleed settings, file validation, cover requirements — are covered in our complete KDP formatting guide. Everything in that guide applies to nonfiction. Read it before your first upload.

Formatting tools for nonfiction

Nonfiction is harder to format than fiction because of the structural complexity: heading hierarchies, tables, figures, callout boxes, and extensive front and back matter. Manual formatting in Word or InDesign gives you full control, but it’s time-intensive and error-prone, especially for the table of contents and page numbering.

Cambric includes nonfiction-specific templates that handle heading hierarchy, table of contents generation, figure captioning, and the front and back matter sequence automatically. You set your trim size, import your manuscript, and the template applies the correct typography, margins, and structure. The output is a print-ready PDF that passes KDP and IngramSpark validation without the manual layout work.

Whatever tool you use, the principle is the same: nonfiction readers are navigating your book, not just reading it. Every formatting decision should make that navigation easier.

Nonfiction formatting is more complex than fiction — but the complexity is structural, not mysterious. Get the heading hierarchy right, build a functional table of contents, set generous margins, and handle figures and tables consistently. If you’re weighing whether to format your book yourself or hire a professional, our book formatting services vs DIY guide breaks down the costs and trade-offs. If you want to skip the manual layout work, Cambric handles all of it through nonfiction-specific templates: heading hierarchies, auto-generated table of contents with accurate page numbers, Roman numeral front matter pagination, and print-ready PDF export for both KDP and IngramSpark.