Convert headlines and titles to proper Title Case following APA, Chicago, MLA, AP, and New York Times capitalization rules.
Input Workspace
Characters: 66Words: 9Lines: 1Size: 66 Bytes
Output Result
Time: 0 msOutput: 0 Bytes
Tool Customization
100% Client-Side Privacy & Large-Text Ready
Supports text inputs up to 50 MB. Computations execute entirely within your local browser memory with zero server uploads.
Typography Guide
About the Title Case Converter & Headline Capitalizer
Capitalizing headlines and titles correctly across academic papers, blog posts, books, and marketing copy requires adhering to established editorial style manuals. Major style guides—including APA 7th edition, Chicago Manual of Style, MLA 9th edition, and Associated Press (AP)—have distinct rules for handling minor words like short prepositions, conjunctions, and articles. The Title Case Converter & Headline Capitalizer transforms plain or messy text into grammatically accurate Title Case in real time. Select your preferred style guide, preserve hyphenated compound words, and copy ready-to-publish headlines in one click.
In-Depth Technical Guide
How Title Case Converter & Headline CapitalizerWorks & What the Results Mean
Major Style Guide Capitalization Rules
Editorial style manuals apply specific rules to lowercase vs. uppercase words in titles:
APA Style (7th Edition): Capitalize all major words and words of 4 letters or more. Lowercase minor words of 3 letters or fewer (articles: a, an, the; short prepositions: as, at, by, for, in, of, off, on, per, to, up; coordinating conjunctions: and, but, for, nor, or, so, yet), unless they are the first or last word of the title or follow a colon.
Chicago Manual of Style (CMOS): Lowercase articles (a, an, the), coordinating conjunctions (and, but, for, or, nor), and all prepositions regardless of length (e.g. through, between, among), unless they begin or end the title.
MLA Style (9th Edition): Similar to Chicago; lowercase articles, coordinating conjunctions, and prepositions of any length unless first or last.
AP Style (Associated Press): Capitalize all words of 4 or more letters, all principal words, and lowercase prepositions of 3 or fewer letters.
Hyphenated Compounds and Subtitles
Our converter correctly capitalizes both elements of hyphenated compound terms (e.g. Self-Driving, Peer-to-Peer) and always capitalizes the first word following a colon (:) or em-dash (—) introducing a subtitle.
Step-by-Step Guide
How to Use Title Case Converter & Headline Capitalizer
1Type or paste your headline, title list, or article draft into the editor workspace.
2Select your preferred editorial style guide preset: APA, Chicago, MLA, or AP Style.
Batch line-by-line conversion supporting multi-line book and chapter title lists.
One-click copy and file download actions with zero latency.
100% in-browser conversion with complete text privacy.
Practical Scenarios
Examples & Real-World Use Cases
Converting a Blog Headline in APA Style
Scenario: Formatting a blog post headline according to APA guidelines.
Sample Input:
how to build a modern web application with next.js and react
Expected Output:
How to Build a Modern Web Application With Next.js and React
Capitalizes major words and 'With' (4 letters in APA) while lowercasing 'to', 'a', and 'and'.
Formatting a Book Title with Subtitle
Scenario: Applying Chicago style to a book title containing a colon.
Sample Input:
the art of code: a comprehensive guide through modern software
Expected Output:
The Art of Code: A Comprehensive Guide Through Modern Software
Capitalizes 'The' at the start and 'A' after the colon, while lowercasing 'of'.
Common Questions
Frequently Asked Questions
APA style capitalizes all prepositions of 4 or more letters (e.g. 'With', 'From', 'Over'), whereas Chicago style keeps all prepositions lowercase regardless of length (e.g. 'with', 'from', 'through') unless they are the first or last word.
