AP Style Title Case Converter
The Associated Press Stylebook defines how news headlines are capitalized: major words capitalized, short prepositions and conjunctions lowercase — except when they start or end the headline.
AP headline rules
Capitalize nouns, verbs, adjectives, and adverbs. Lowercase conjunctions (and, or, but) and prepositions (of, in, on) regardless of length — unless they begin or end the headline.
Where AP style applies
News headlines, article titles in journalism, press releases, and editorial workflows that follow AP Stylebook.
Why converters help
AP’s "prepositions lowercase even if long" rule is the opposite of APA — easy to mix up. The converter applies the correct rule set for AP.
Frequently asked questions
Does AP capitalize prepositions?
No — AP lowercases all prepositions (even long ones like "throughout") unless they begin or end the headline.
Is AP title case different from Chicago?
Yes — Chicago capitalizes longer prepositions; AP does not. Choose the style that matches your publication.
Is this free?
Yes — free, unlimited, browser-based.
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