About the KDP Page Count Calculator
Your page count drives almost every print decision: printing cost, minimum list price, spine width and full cover size. But you rarely know it until the interior is formatted. This calculator gives you a planning number early, from your word count and the layout choices that matter most.
Choose a trim size, body font size and line spacing, then add your front and back matter (title page, copyright, contents, acknowledgements, about the author) and the number of chapters. The calculator estimates words per page, body pages, total pages and the print page count you would enter in KDP, which is always an even number and never below the paperback minimum. Switch to pages to words mode to find how long a manuscript should be to fill a given page count.
Every assumption is shown with the result, so you can judge how close it will be for your book. Once you have a page count, carry it into the Spine Width Calculator and the Cover Size Calculator. For guidance on typical lengths by genre, see how many pages a book should have.
How It Works
Words per page start from a baseline of about 300 words on a 6" x 9" page in 11 pt type with book standard 1.15 spacing. That baseline is scaled by your trim's text area (after typical margins of 1.25" across and 1.5" down), by the square of 11 divided by your font size, and by a line spacing factor.
Body pages are your word count divided by words per page, plus about half a page per chapter for new chapter openings, rounded up. Front and back matter pages are added to give the total.
The print page count rounds the total up to an even number, because every sheet has two sides, and raises it to 24 if needed. In pages to words mode the steps run in reverse.
Formula
- Words per page
- WPP = 300 × (Text area ÷ 6" x 9" text area) × (11 ÷ Font size)² × Spacing factor
- Body pages
- Body pages = ⌈Words ÷ WPP + Chapters × 0.5⌉
- Print pages
- Print pages = max(24, Body pages + Front and back matter, rounded up to even)
- Words for a target
- Words = (Target pages − Front and back matter − Chapters × 0.5) × WPP
Example
A 60,000-word novel, 6" x 9", 11 pt, 1.15 spacing, 20 chapters, 12 pages of front and back matter
- Words per page: 300 (the baseline layout).
- Body pages: 60,000 ÷ 300 = 200, plus 20 × 0.5 = 10 for chapter openings, giving 210.
- Total: 210 + 12 = 222 pages, already an even number.
- The same book at 5.5" x 8.5" fits about 251 words per page and comes to 262 pages.
Plan for about 222 printed pages at 6" x 9", or about 262 at 5.5" x 8.5".
Important Notes
- This is a planning estimate. Your formatted interior file sets the real page count.
- Fonts differ in width: a compact serif fits noticeably more words per page than a wide one at the same point size.
- Images, tables, scene breaks, drop caps and large headings inside chapters add pages that a word count cannot see.
- KDP paperbacks must have at least 24 pages, and the maximum (828 pages for black ink on white paper) depends on ink and paper. The calculator warns you when you go past it.
- Margins are assumed, not calculated from your page count. Thicker books need wider inside margins, which slightly lowers words per page.
Frequently Asked Questions
How many words fit on a 6 x 9 page?
About 300 words in 11 pt type with 1.15 line spacing and typical margins. Smaller type, single spacing or a narrower font fits more; larger type and generous spacing fit fewer.
Why does KDP need an even page count?
Each printed sheet has a front and a back, so a book always has an even number of pages. If your file has an odd number, a blank page is added at the end.
Should I count front matter in the page count?
Yes. KDP counts every page in your interior file, including the title page, copyright page, contents, blank pages and back matter. Enter those as front and back matter pages.
How much does each chapter add?
Chapters usually start on a new page and often lower on the page, so the last page of the previous chapter is partly empty. The calculator allows about half a page per chapter. If your chapters start on right-hand pages only, add more front and back matter pages to allow for the extra blanks.
Which trim size gives the fewest pages?
Larger trims hold more words per page. Compare by switching the trim size: fewer pages lowers printing cost, but very large trims can feel unusual for fiction. See [KDP trim sizes explained](/guides/kdp-trim-sizes-explained).
Can I use this for hardcovers?
Yes for the page estimate, since words per page depend on trim, font and spacing rather than binding. Hardcover page limits and available trim sizes are different, so check them in KDP.
Related KDP Tools
- Word Count CalculatorCount words, characters, sentences and paragraphs, with page and reading-time estimates.
- KDP Spine Width CalculatorCalculate paperback spine width from page count and paper type.
- Paperback Pricing CalculatorGet minimum, break-even and recommended paperback prices from page count, trim and ink.
- Reading Time CalculatorEstimate how long your book takes to read at different reading speeds.
- Book Launch ChecklistAn interactive checklist from manuscript to post-launch, saved in your browser.
- Book Title GeneratorGenerate title ideas from your genre, topic, audience, tone and keywords.
Related Guides
- How Many Pages Should a Book Have? Word Counts and KDP Page CountsCommon word count ranges by genre, words per page by trim size and font, KDP's 24 to 828 page limits, and how page count affects print cost and spine width.
- KDP Trim Sizes ExplainedEvery standard KDP trim size in inches and mm, the regular vs large trim rule and how it affects print cost, common sizes by genre, and how custom sizes work.