Novel Word Count Guide: How Long Should Your Book Be?

Word count isn't just a writing milestone — it's a publishing signal. The "right" length tells agents, editors, and readers what kind of book they're holding and whether it delivers on its genre's promise. Too short signals you skipped the hard work; too long signals you couldn't kill your darlings.

Quick Reference: Word Count by Format

• Flash fiction: 100–1,000 words
• Short story: 1,000–7,500 words
• Novelette: 7,500–17,500 words
• Novella: 17,500–40,000 words
• Novel: 50,000–110,000 words (sweet spot: 70,000–90,000)
• Epic novel: 110,000–200,000 words

Word Count by Genre

• Romance: 50,000–100,000 words. Category romance (Harlequin) runs tight: 50,000–65,000. Single-title romance: 80,000–100,000. Dark romance and romantic suspense often run 85,000–105,000.
• Fantasy (adult): 90,000–120,000 for debut novels. Epic fantasy: 100,000–180,000 is common (Tolkien effect). Debut epic over 120,000 is a hard sell to agents. Cozy fantasy: 70,000–90,000.
• Sci-Fi: 80,000–110,000. Hard sci-fi can run longer; space opera 90,000–120,000. Debut: aim for under 100,000.
• Thriller/Mystery: 70,000–90,000. Psychological thriller: 80,000–100,000. Cozy mystery: 60,000–80,000. Legal/procedural thrillers can run 90,000–110,000.
• Young Adult: 60,000–90,000. YA fantasy runs to the upper end. Contemporary YA: 60,000–80,000. Debut YA over 100,000 is a very hard sell.
• Middle Grade: 20,000–55,000. The sweet spot is 35,000–45,000 words.
• Literary Fiction: 70,000–100,000. Literary can go longer (110,000+) once you're established, but debut literary should stay under 100,000.
• Horror: 70,000–100,000. Psychological horror tends shorter; cosmic/epic horror can run longer.
• Historical Fiction: 80,000–120,000. Research-heavy worlds can justify the length, but pace must remain tight.

Kindle Unlimited / Indie Publishing Targets

• KU romance: Readers expect 65,000–90,000 words. Shorter books (35,000–50,000) often sell as novellas with different pricing expectations.
• KU fantasy: 80,000–120,000; series entries after book 1 can go longer once you've built readership.
• Rapid-release indie: Some authors target 45,000–60,000-word entries shipped every 4–6 weeks. Readers of this format are accustomed to shorter, faster books.
• KU page reads: Longer books earn more pages-read revenue, which incentivizes the 90,000–120,000-word range for KU-enrolled titles.

What Happens When You're Over or Under?

• Under by 20,000+ words: Add a subplot, deepen your protagonist's inner journey, expand secondary characters, or add a mirror scene that reflects the theme. Don't pad — enrich.
• Over by 20,000+ words: Cut the slowest 10% first (overlong descriptions, filler subplots, characters who do nothing). Then look for scenes that duplicate emotional beats.
• Structurally off: Use word count as a diagnostic. If your midpoint arrives at 60% of your total words, your first act is probably too long.

NaNoWriMo & Daily Writing Targets

• NaNoWriMo target: 50,000 words in 30 days = 1,667 words/day
• 80,000-word novel in 90 days: ~889 words/day
• 80,000-word novel in 6 months: ~444 words/day (very achievable around a day job)
• Typical writing session: 500–2,000 words; most writers average 500–1,000 in a focused 30-minute sprint