How to write a book or chapter title in title case
Book titles overwhelmingly follow Chicago headline style, which publishers and most bibliographies expect. Chapter titles follow the same rules. Paste a book or chapter title into the box above and the converter applies the right rule set instantly. You can switch styles to compare and pick the one that fits your context.
The quick rule
Use Chicago title case: capitalize the first and last words and all principal words, and lowercase articles, coordinating conjunctions and prepositions of any length. A strong, correctly cased title looks professional on a cover and in a catalog listing.
Example
Type a phrase like “the long road home through the mountains” above and watch each word fall into place: the major words are capitalized, the small connecting words are lowercased, and the first and last words are always capitalized.
How the publishing industry cases book titles
Book publishing has settled conventions that go beyond the basic headline rule, and retailers enforce some of them at the metadata level:
- Subtitles start with a capital. The first word after the colon is always capitalized, even if it is an article: The Long Road Home: A Memoir of the Mountains. Your title and subtitle are entered as separate metadata fields at most retailers, and each field is cased independently.
- The last word before the colon is treated as a “last word.” Chicago capitalizes it even when it is a minor word, because it closes the main title.
- Hyphenated compounds: capitalize both parts of most compounds (Self-Made, Award-Winning), but keep the second element lowercase after a prefix that cannot stand alone (E-commerce stays E-commerce mid-title only as E-Commerce per Chicago 8.161's first-element rule — when in doubt, follow your publisher's house style).
- Series names follow the same casing as titles (The Wheel of Time, Book Four).
- Retail metadata rules: Amazon KDP and IngramSpark reject or flag titles typed in ALL CAPS and expect the printed cover, the copyright page and the metadata field to match. A book listed as THE LONG ROAD HOME looks like spam in search results and can be asked to re-submit.
Chapter titles inside the book follow the same headline style as the cover title. If you cite other books inside yours, their titles are italicized and cased by the same Chicago rules — which is one reason the whole industry converged on a single convention.
Why correct casing matters here
Casing is the first thing a reader notices before they read a single full word. Inconsistent capitalization looks careless; clean title case signals that the rest of the work is just as carefully prepared. For a book or chapter title, it is a small detail that quietly builds trust.
Frequently asked questions
- Which style should I use for a book or chapter title?
- Book titles overwhelmingly follow Chicago headline style, which publishers and most bibliographies expect. Chapter titles follow the same rules.
- Should the first word always be capitalized?
- Yes. In every title-case style the first and last words are capitalized no matter what they are.
- Is title case better than sentence case here?
- It depends on tone. Title case looks formal and polished; sentence case feels more casual. Use the style switcher above to compare.
- Is the first word after the colon in a subtitle capitalized?
- Yes, always. In Chicago style — and in retailer metadata rules — the first word of a subtitle is capitalized even when it is a minor word like 'a' or 'the'.