Chicago Title Case Converter
The Chicago Manual of Style capitalizes most words in titles, including prepositions of four letters or more (From, With, After) — a middle ground between AP and APA. This converter applies Chicago rules exactly.
Chicago title case rules
Capitalize the first and last word, all nouns, verbs, adjectives, adverbs, and pronouns, plus prepositions and conjunctions of four letters or more. Lowercase short prepositions like "of" and "to" (except first/last).
Where Chicago style applies
Books, academic publishing, literary journals, and any publication following the Chicago Manual of Style.
Chicago vs APA vs AP
Chicago capitalizes 4+ letter prepositions (like APA) but keeps "to" in infinitives capitalized (unlike APA). The converter keeps the rule sets separate so you never mix them.
Frequently asked questions
Does Chicago capitalize "from" in a title?
Yes — prepositions of four letters or more are capitalized in Chicago style.
Is "to" capitalized in Chicago infinitives?
Yes — Chicago capitalizes "to" in infinitives (e.g., "How to Write"), unlike APA.
Does this follow the 18th edition?
Yes — the rules follow the current Chicago Manual of Style.
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