Our free Title Case Converter capitalizes titles, headlines, essay headers, and article topics according to standard AP and Chicago editorial rules. Automatically capitalizes major words while keeping minor prepositions and conjunctions lowercase (with options to preserve uppercase acronyms or force minor word capitalization). Runs 100% locally in browser memory.
Type or paste your headline or article title into the left panel.
Toggle acronym preservation or minor word capitalization in options.
Click "Convert" and copy your title-cased heading to your clipboard.
Capitalizes principal words while keeping articles (a, an, the) and short prepositions lowercase in titles.
Customize rules to preserve ALL-CAPS acronyms or force capitalization on all minor connector words.
Headline capitalization runs strictly inside client JavaScript without any external server requests.
Style Manual Capitalization Standards (APA, Chicago, MLA, AP): Title capitalization rules vary across publishing style guides. Chicago & APA Style capitalize all words of 4 letters or more, plus major nouns, verbs, and pronouns, while keeping minor prepositions (in, on, at, by, for) and coordinating conjunctions (and, but, or) lowercase unless they start or end the title.
Handling Hyphenated Compound Words & Subtitles: Proper title case formatting requires capitalizing both parts of hyphenated major words (e.g., "High-Performance") and automatically capitalizing the first word following a colon in a subtitle (e.g., "SEO Writing: A Comprehensive Guide").
Zero-Latency Local Browser String Conversion: Your article headlines, book titles, and email subject lines are formatted 100% locally in web browser RAM tab memory. No titles or text entries are uploaded to cloud servers.