Free Book Length Calculator (+ Guide)
A book length calculator that shows how long bestsellers in your genre are, from real books, and how your book compares.
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by Navid Moazzez·Updated Sept 30, 2026·3 min read·Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.Pick your genre to see how long its bestsellers are, then compare your book and set your finish date.
Your genre
Your book
How long #1 bestsellers are
A bestseller's pages are the middle of its editions (hardcover, paperback, large print), from Open Library. Each sets a different number of words on a page, so compare pages at your own layout.
Recent #1 bestsellers in this genre
- Game On by Navessa Allen (2026): 384 pages
- Atmosphere by Taylor Jenkins Reid (2025): 352 pages
- Caught Up by Navessa Allen (2025): 370 pages
- Mate by Ali Hazelwood (2025): 368 pages
- Say You'll Remember Me by Abby Jimenez (2025): 352 pages
When you'll finish
Type your words above and your pace here to see your finish date.
What you type or upload stays in this browser. Page counts come from each font's own letter widths, and from line breaks measured on 24 public domain books.
Embed this tool on your site
Paste the code into any page: WordPress, Webflow, Squarespace, Ghost or plain HTML. It's free with the credit under it, which links back to navid.me.