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AP Style Title Case Converter

Capitalize headlines by real style-guide rules — AP, APA, Chicago and MLA — with correct handling of articles, prepositions, hyphens and colons.

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Splitting the title into words
Applying style-guide rules
Capitalizing hyphens and colons
Done

Result

This page opens the title capitalization tool with AP style preselected — paste your headline, run it and copy the result, with the APA, Chicago and MLA versions shown alongside for comparison.

AP (Associated Press) style is the standard for journalism and news headlines. Its core rule: capitalize words of four or more letters, and lowercase articles, coordinating conjunctions and prepositions shorter than four letters. So "over" and "with" are capitalized in AP, while "of", "to" and "in" stay down — and the first and last words are always capitalized no matter what.

Unlike a naive capitalizer that uppercases every word, this tool applies the real AP rules including hyphenated compounds and words after colons. Everything runs locally in your browser and your headlines never leave the page.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • AP, APA, Chicago and MLA title case with per-style preposition rules.
  • First and last words always capitalized; words after colons capitalized; both parts of hyphenated compounds handled.
  • Multi-line input: each line is treated as its own title.

Key Benefits

✓ Real style-guide rules, not naive capitalization: articles, conjunctions and prepositions are lowercased exactly as AP, APA, Chicago and MLA prescribe.
✓ All four styles rendered at once with your chosen style first — compare and pick before you publish.
✓ Runs entirely in your browser — headlines and drafts are never uploaded anywhere.

Use Cases

  • • Capitalize a news headline in AP style with short prepositions lowercased and 4+ letter words capitalized correctly.
  • • Format paper and chapter titles for APA, Chicago or MLA reference lists without memorizing each guide's preposition rules.
  • • Compare all four style guides side by side to see exactly which words each one lowercases before you publish.