AP Title Capitalization Rules

AP style capitalizes words of 4 or more letters. Short prepositions, articles, and conjunctions under 4 letters are lowercase.

Where AP Style Is Used

AP title capitalization is the standard for Journalism, News, PR, Marketing writing. Following the correct style guide is important when submitting work for publication, academic review, or professional presentation in these fields.

AP Capitalization Rules

• Capitalise words of 4+ letters
• Lowercase: articles (a, an, the)
• Lowercase: prepositions fewer than 4 letters
• Lowercase: coordinating conjunctions
• First and last word always capitalised

How AP Style Works in Practice

AP title case is defined by the Associated Press Stylebook and is the standard for US newspapers, wire services, broadcast journalism, and most digital news organizations. AP uses a simple length-based rule: capitalize any word of four or more letters, regardless of its grammatical category. This means prepositions like "with," "from," "into," and "over" — which other styles lowercase — are capitalized in AP. The rule is designed to be fast and easy to apply under deadline pressure. Journalists can apply it without consulting a style guide: count the letters, and capitalize at four or more.

Common Edge Cases in AP Style

• "With" (4 letters) is capitalized in AP — this surprises writers familiar with Chicago or APA.
• "From," "into," "over," "upon," "like," and "onto" (all 4 letters) are capitalized in AP.
• "To" in infinitives is capitalized in AP style: "How To Write" — unlike APA, Chicago, and MLA.
• "The" (3 letters) stays lowercase mid-title; "An" (2 letters) stays lowercase.
• Many AP news websites use sentence case for headlines, while formal composition titles use AP title case.

Example: AP Title Case

To see AP style applied to your own title with a word-by-word explanation of every rule, use the AP title capitalizer. You can also compare all 9 styles side by side using the same title.

How AP Differs From NY Times

AP and NY Times styles are closely related — both are journalism standards and both capitalize words above a length threshold. The key difference is in that threshold: AP capitalizes words of 4 or more letters, while NY Times uses a threshold of 3 or more letters for some categories but applies its own house exceptions. In practice, NY Times style produces slightly fewer capitalizations than AP, particularly for short prepositions in the 3–4 letter range. Both styles are appropriate for journalism contexts.

See the full comparison in the NY Times style guide or use the side-by-side comparison tool.

How AP Differs From Other Styles

Every style guide makes different choices about prepositions, articles, and conjunctions. Here is how AP compares to the other major title capitalization standards:

• APA — widely used in social sciences.
• Chicago — standard for books and publishing.
• MLA — standard for literature and language.
• Bluebook — used in legal writing and law review.
• AMA — standard for medical and health writing.
• NY Times — used in one of the world's most read publications.
• Wikipedia — sentence case with proper nouns.
• Email — sentence case for professional communication.

Frequently Asked Questions

What is AP title capitalization?

AP title capitalization follows the Associated Press Stylebook. It uses a simple length rule: capitalize all words of four or more letters. Articles, prepositions fewer than four letters, and coordinating conjunctions are lowercase. This makes AP one of the easiest styles to apply consistently.

When should I use AP title case?

Use AP title case for newspaper articles, wire service content, press releases, digital news, and content marketing. The AP Stylebook is the standard guide for US journalism and much of the public relations industry.

What words are capitalized in AP titles?

All words of four or more letters are capitalized. This includes nouns, verbs, adjectives, adverbs, and prepositions of four or more letters — "From," "With," "Into," "Over," "Than," "Like." The first and last word are always capitalized.

What words are lowercase in AP title case?

Articles (a, an, the), prepositions of fewer than four letters (at, by, of, on, to, up), coordinating conjunctions (and, but, or, nor, for, so, yet), and the particle "as" are lowercase in the middle of an AP title.

Are articles capitalized in AP title case?

No. Articles (a, an, the) are lowercase in AP title case in the middle of a title. "A" or "The" is capitalized only when it is the first word of a title.

Are conjunctions capitalized in AP title case?

Coordinating conjunctions (and, but, or, nor, for, so, yet) are lowercase. Longer conjunctions of four or more letters (although, because, unless, while) are capitalized under the 4+ letter rule.

Are prepositions capitalized in AP title case?

Short prepositions (fewer than four letters) — at, by, of, on, to, up — are lowercase. Prepositions of four or more letters — From (4), With (4), Into (4), Over (4), Than (4), About (5) — are all capitalized because AP's rule is based purely on word length.

Is the first word always capitalized in AP titles?

Yes. The first word of any AP title is always capitalized regardless of its part of speech or length.

Is the last word always capitalized in AP titles?

Yes. The last word of an AP title is always capitalized.

How is AP title case different from other styles?

AP's defining rule is the 4+ letter threshold, which is simpler than Chicago's nuanced preposition list or APA's "all prepositions lowercase" rule. AP capitalizes "From," "With," and "Into" — all of which are lowercase in APA and MLA. Chicago lowercases "with" (4 letters, ≤4 rule) but AP capitalizes it.

Can I convert a title to AP style automatically?

Yes. Use the AP title capitalizer to convert any title instantly with a full explanation.

Can I compare AP with APA, Chicago, and MLA?

Yes. The Compare Styles tool shows all 9 styles side by side.

Can I use TitleCasePro for AP capitalization?

Yes. TitleCasePro's AP mode follows the AP Stylebook length rule. Use the Title Capitalizer or Batch Capitalizer for large lists.

Use the AP Capitalizer

Ready to capitalize a title in AP style? The AP title capitalizer converts your title instantly and explains every word. For processing a list of titles at once, use the batch capitalizer with CSV or TXT import. To see your title in all styles simultaneously, use the style comparison tool.

Read our guide on AP style title capitalization for a complete reference with examples.