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Title Case Converter

Text ToolsCase and Formatting
Style guide
Title case —
Words
—
Capitalised
—
Kept lowercase
—
Acronyms kept as typed
—
Style applied
—

Paste a title and pick a style guide. Under Chicago, the lord of the rings becomes The Lord of the Rings: articles, prepositions and and/but/for/or/nor stay lowercase unless they open or close the title. AP and APA lowercase only minor words of three letters or fewer, so gone with the wind becomes Gone With the Wind.

About this tool

Editors, bloggers and students writing reference lists all run into the same question: which small words stay lowercase in a title? The answer depends on the style guide. Chicago lowercases every preposition, however long, while AP and APA capitalise any word of four letters or more. This converter applies the rule you choose, always capitalises the first and last word and the word after a colon, and leaves acronyms and brand names with inner capitals, such as NASA or iPhone, exactly as typed. Several titles can be converted at once, one per line. One limit: the tool reads words, not grammar, so a word like up or over used as part of a verb (Look Up) is treated as a preposition and may need a manual fix.

How to use it

  1. Paste your titles

    Type or paste one or more titles into the box, one per line, or open a .txt file.

  2. Choose a style guide

    Pick Chicago, AP / APA, or Every word to capitalise everything.

  3. Check the counts

    See how many words were capitalised, kept lowercase or left as typed acronyms.

  4. Copy the result

    Copy the converted titles and paste them into your document or CMS.

Examples

A book title in Chicago style

Headline or title
the lord of the rings
Style guide
Chicago

Result Title case: The Lord of the Rings
Words: 5
Capitalised: 3
Kept lowercase: 2
Acronyms kept as typed: 0
Style applied: Chicago

  1. Style: Chicago. The first and last word of each line, and any word after a colon, are capitalised.
  2. 2 minor words (articles, short conjunctions, prepositions) left lowercase; 3 capitalised.
  3. 0 words with inner capitals or acronyms (iPhone, NASA) kept as typed.

The leading article is capitalised because it starts the title; the inner of and the stay lowercase.

The same title in AP style

Headline or title
gone with the wind
Style guide
AP / APA

Result Title case: Gone With the Wind
Words: 4
Capitalised: 3
Kept lowercase: 1
Acronyms kept as typed: 0
Style applied: AP / APA

  1. Style: AP / APA. The first and last word of each line, and any word after a colon, are capitalised.
  2. 1 minor word (articles, short conjunctions, prepositions) left lowercase; 3 capitalised.
  3. 0 words with inner capitals or acronyms (iPhone, NASA) kept as typed.

AP and APA capitalise any word of four letters or more, so with is capitalised here but stays lowercase under Chicago.

A headline with an acronym

Headline or title
NASA launches a new rocket into orbit
Style guide
Chicago

Result Title case: NASA Launches a New Rocket into Orbit
Words: 7
Capitalised: 4
Kept lowercase: 2
Acronyms kept as typed: 1
Style applied: Chicago

  1. Style: Chicago. The first and last word of each line, and any word after a colon, are capitalised.
  2. 2 minor words (articles, short conjunctions, prepositions) left lowercase; 4 capitalised.
  3. 1 word with inner capitals or acronyms (iPhone, NASA) kept as typed.

NASA is left in capitals because the rest of the line is not all caps, and into stays lowercase as a Chicago preposition.

How it is calculated

capitalise word unless it is a minor word and neither first nor last in the line

minor word (Chicago)
a, an, the; and, but, for, or, nor; any preposition such as of, into, between or through
minor word (AP / APA)
articles, conjunctions and prepositions of three letters or fewer, such as of, in, to and for

Each line is treated as a separate title. Words are found by Unicode letter rules, so accented titles work. The first and last word, and any word that follows a colon, question mark or dash, are always capitalised. A word with a capital letter after its first letter (NASA, iPhone, McDonald) is kept as typed unless the whole input is in capitals. Hyphenated compounds capitalise each part except minor words.

When not to use it

  • Sentence-case styles, such as APA reference-list article titles, capitalise only the first word and proper nouns.
  • Phrasal verbs like Give Up or Log In need a manual check, because the tool cannot tell them from prepositions.

Common mistakes

  • Assuming all short words are lowercase: Chicago capitalises Is, Be and It because they are verbs and pronouns, not minor words.
  • Typing a whole title in capitals and expecting acronyms to survive; in all-caps input every word is recased.
  • Mixing Chicago and AP within one publication, which leaves with lowercase in some headlines and capitalised in others.

Frequently asked questions

Why is with lowercase in Chicago but capitalised in AP?

Chicago lowercases every preposition regardless of length, so with, between and through stay lowercase. AP and APA set the cut-off at length instead: any word of four letters or more is capitalised, so with becomes With.

Are verbs like is and be ever lowercase?

No. Every style guide treats verbs, nouns, pronouns, adjectives and adverbs as major words, so Is, Be, It and Are are capitalised however short they are. Only articles, some conjunctions and prepositions count as minor words.

What happens after a colon?

The first word after a colon starts a subtitle, so it is capitalised even if it is a minor word: Star Wars: A New Hope keeps the capital A.

Will it change NASA or iPhone?

No. A word with a capital letter after its first letter is treated as an acronym or brand name and kept as typed. The exception is input written entirely in capitals, where every word is recased because there is no way to tell acronyms apart.

How are hyphenated words handled?

Each part of a compound is capitalised, as in Long-Term Goals or Self-Made, except a minor word inside it, which stays lowercase, as in Up-to-Date under Chicago.

Can I convert a list of titles at once?

Yes. Put each title on its own line. Every line is handled as a separate title, so the last word of each line is capitalised and the line breaks are kept.

Cite this tool

Using this tool in an assignment, article or report? Copy a citation, or a link for your website.

APA

Tools Directory Editorial Team. (2026, October 25). Title Case Converter. Tools Directory. Retrieved October 26, 2026, from https://tools.milunir.com/text-tools/case-and-formatting/title-case-converter/

MLA

Tools Directory Editorial Team. “Title Case Converter.” Tools Directory, 25 Oct. 2026, https://tools.milunir.com/text-tools/case-and-formatting/title-case-converter/. Accessed 26 Oct. 2026.

Chicago

Tools Directory Editorial Team. “Title Case Converter.” Tools Directory. Last modified October 25, 2026. Accessed October 26, 2026. https://tools.milunir.com/text-tools/case-and-formatting/title-case-converter/.

Link<a href="https://tools.milunir.com/text-tools/case-and-formatting/title-case-converter/">Title Case Converter – Tools Directory</a>