Title Case Converter
Format titles and headlines the way a style guide expects: major words capitalized, short articles and prepositions in lowercase.
Processed locally in your browser/ Your data stays in your browser.
What is Title Case Converter?
Title Case capitalizes the important words of a headline and leaves small words lowercase. AP style keeps articles, short conjunctions and prepositions of up to three letters (a, an, the, and, but, or, for, nor, on, at, to, by, of, in…) lowercase, so "from" and "with" are capitalized. Chicago style lowercases every preposition regardless of length. Simple mode capitalizes every word.
In all styles the first and last word and any word after a colon are capitalized. Acronyms such as NASA and USB are preserved, an all-caps headline is treated as shouting and fully converted, and each line is handled as its own title. The list of words kept lowercase is shown in the notes. The rules are English rules.
How does it work?
- Paste one headline per line.
- Select AP style, Chicago style or Simple (capitalize every word).
- Choose whether to keep ALL-CAPS acronyms and whether to lowercase the rest of each word, then copy the result.
Common use cases
- Formatting blog post, article or video titles consistently.
- Fixing a headline that was typed in lowercase or in ALL CAPS.
- Preparing book, chapter or slide titles for a publication.
- Checking how an AP versus Chicago editor would capitalize a headline.
Examples
Try this input in the tool above:
the lord of the rings: the return of the king how to win friends and influence people NASA plans a trip up to the moon
The Lord of the Rings: The Return of the King How to Win Friends and Influence People NASA Plans a Trip up to the Moon
Privacy
Title Case Converter runs entirely in your browser. The text or files you provide are processed on your device and are not uploaded, logged or stored on our servers.
Limitations
Rules are for English titles only, and the tool cannot recognize proper nouns or decide that a word is a verb or preposition in context (for example "up" in "Look Up"). Review the result before publishing.
Frequently asked questions
What is the difference between AP and Chicago style?
AP lowercases articles, conjunctions and prepositions of three letters or fewer. Chicago lowercases all prepositions, however long, plus articles and coordinating conjunctions.
Why is "The" capitalized at the start but "the" lowercase later?
The first and last words of a title are always capitalized. Articles in the middle stay lowercase.
Will it break brand names like iPhone?
Turn off "lowercase the rest of each word" and words with inner capitals such as iPhone or McDonald are left as typed.
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