Convertisseur AP Title Case

Mettez des majuscules aux titres selon le style AP (Associated Press) : mots de 4 lettres ou plus en capitale, courtes prépositions et articles en minuscules

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AP Style Capitalization Rules

Four Letters or More

AP capitalizes all words of four or more letters, including prepositions like "with", "from", and "over".

the Mayor Announces With New Plan

Verbs Are Always Capitalized

No matter how short: is, are, be, and go are always capitalized in AP headlines.

Why Is the Sky Blue in Winter

First and Last Word

The first and last words of a headline are always capitalized, even articles and short prepositions.

The Story of a City

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Official AP Stylebook Rules

Implements the Associated Press headline capitalization rules used by newsrooms: capitalize principal words, all words of four or more letters, and every verb regardless of length.

Real-Time Preview

See your headline converted to AP title case as you type. Perfect for headlines, subheads, and social posts under deadline.

Privacy Focused

All conversion happens locally in your browser. Unpublished headlines never leave your device.

Comment ça marche

Des étapes simples pour traiter vos AP title case comme un pro

Enter Your Headline

Type or paste your headline, subhead, or title.

Automatic Conversion

AP Style rules are applied instantly — no settings needed.

Review the Result

Check the AP-capitalized headline in the output editor.

Copy & Publish

Copy the result and use it in your article or post.

Formateur et validateur AP Title Case Converter professionnel

AP Title Case processing runs entirely in your browser — no uploads, no accounts, no limits.

This AP Title Case Converter applies the Associated Press Stylebook headline capitalization rules that newsrooms and journalists rely on. Paste any headline and get publication-ready AP capitalization instantly.

AP style capitalizes the principal words of a headline — nouns, pronouns, verbs, adjectives, and adverbs — plus every word of four or more letters. Short words (three letters or fewer) such as articles, conjunctions, and short prepositions are lowercased unless they are the first or last word of the headline. Verbs are always capitalized, even short ones like "is" and "be".

Widely used by journalists, editors, PR professionals, and content writers for news headlines, press releases, subheads, captions, and social media posts where AP Style compliance is expected.

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Questions fréquentes

Réponses aux questions courantes sur le formatage Ap Title Case

AP title case is the headline capitalization style defined by the Associated Press Stylebook. It capitalizes principal words and all words of four or more letters, while lowercasing short articles, conjunctions, and prepositions (three letters or fewer) unless they are the first or last word.

Articles (a, an, the), coordinating conjunctions (and, but, or, for, nor), and short prepositions (at, by, in, of, on, to, up, as) of three letters or fewer stay lowercase — unless they are the first or last word of the headline.

Yes. AP style capitalizes verbs of any length, including very short ones like "is", "are", "be", and "go". This is one of the most common mistakes when capitalizing headlines by hand.

Words of four or more letters are always capitalized in AP style, including prepositions like "with", "from", "over", and "into".

AP capitalizes words of four or more letters and all verbs. Chicago traditionally lowercases all prepositions regardless of length. APA lowercases only short words (fewer than four letters) that are articles, conjunctions, or prepositions. Each style also differs in handling hyphenated compounds and words after colons.