Title Case Converter
Title-case text to AP, Chicago, or APA rules — preserves acronyms & brands (NASA, iPhone), handles colon subtitles. Live.
About this ToolHow it works, benefits & use casesTap to collapse
Title casing is more than capitalizing every word — real style guides keep short articles, conjunctions, and prepositions lowercase, and this converter applies those rules for you. Choose AP style (capitalizes words of four or more letters, lowercases short function words), Chicago style (lowercases all articles, conjunctions, and prepositions regardless of length), or APA style (like AP but always capitalizes the start of the title and any subtitle). Sentence case, all lowercase, and all UPPERCASE are also available. Crucially, it preserves acronyms and brand names: NASA, iPhone, API, JavaScript, GitHub, and similar tokens stay correctly cased instead of being flattened. A colon-subtitle rule capitalizes the first word after a colon, question mark, or exclamation point. Hyphenated compounds are handled segment by segment. Conversion is live as you type, the input and settings live in a shareable URL, and everything runs in your browser.
How to Use
- 1Pick a title-case style from the dropdown — AP, Chicago, APA, sentence case, lowercase, or UPPERCASE — and read the rule hint shown below it.
- 2For AP, Chicago, and APA, toggle "Preserve acronyms & brands" and "Capitalize after colon" to match your house style.
- 3Type or paste your headline into the input, or click "Load example" to see the rules applied.
- 4The result updates live; click Convert to confirm and surface any input error.
- 5Copy the result, download it as a text file, or share the URL with the exact text and settings.
Key Benefits
- Three real style standards — AP, Chicago, and APA — with the correct treatment of short function words
- Preserves acronyms and known brands (NASA, iPhone, API, JavaScript, GitHub) instead of forcing title case
- Capitalizes the first word after a colon, question mark, or exclamation for proper subtitles
- Sentence case, lowercase, and UPPERCASE modes for quick reformatting
- Handles hyphenated compounds segment by segment
- Live preview with a shareable URL that captures text and options
- Runs entirely in the browser with nothing uploaded
Common Use Cases
- Formatting blog post and article headlines to a consistent AP or Chicago style
- Casing book or paper titles with a subtitle after a colon in APA style
- Cleaning up headings that came in as all-caps or all-lowercase
- Keeping product and tech names like iPhone and JavaScript correctly cased across content
- Standardizing UI labels and documentation headings across a project
Style
Capitalizes words 4+ letters; lowercases short articles, conjunctions & prepositions
Keep NASA, iPhone, API intact
Subtitle starts a new capital
0 characters · live
Capitalizes words 4+ letters; lowercases short articles, conjunctions & prepositions
Enter text above to see the converted result.
Was this tool helpful?
Share Your Experience
Help others discover this tool!
Related tools
- Case ConverterConvert text to camelCase, snake_case, kebab-case, and more
- Whitespace RemoverRemove extra whitespace from text
- Word CounterCount words, characters, sentences, and reading time
- Sort LinesSort text lines alphabetically or numerically
- String ReverserReverse any text string
- Text to SlugConvert text to URL-friendly slugs
AP style capitalizes words of four or more letters and lowercases short articles, conjunctions, and prepositions (three letters or fewer). Chicago lowercases all articles, conjunctions, and prepositions regardless of length. APA follows the AP length rule but additionally forces a capital at the start of the title and at the start of any subtitle following a colon.
Yes, when "Preserve acronyms & brands" is on (the default). Tokens with two or more uppercase letters — like NASA or API — are left as-is, and a built-in brand map keeps names such as iPhone, iPad, macOS, iOS, eBay, YouTube, JavaScript, TypeScript, GitHub, GitLab, npm, Node.js, PostgreSQL, MySQL, and GraphQL correctly cased.