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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.

Navid Moazzezpor Navid Moazzez·Actualizado en 30 sept 2026·3 min de lectura·

Pick your genre to see how long its bestsellers are, then compare your book and set your finish date.

Try an example:
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Your genre

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Your book

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How long #1 bestsellers are

Middle book384 pagesOf 41 New York Times bestsellers
Most are352–485The middle half, in pages
Your book–Type your words to compare.

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
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When you'll finish

Type your words above and your pace here to see your finish date.

Same book, next:Page count and spineWords to pagesProfit and break-even

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.

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