APA vs AP Title Capitalization

Both APA and AP are widely used title capitalization styles, but they differ in how they handle prepositions, conjunctions, and articles. Understanding the differences helps you apply the right standard for your publication or field.

APA Title Capitalization

APA style capitalizes major words: nouns, verbs, adjectives, and adverbs. Articles, short prepositions, and coordinating conjunctions are lowercase unless they are the first or last word.

Used in: Psychology, Social Sciences, Education, Business

APA rules

• Capitalise all major words (nouns, verbs, adjectives, adverbs)
• Lowercase: articles (a, an, the)
• Lowercase: coordinating conjunctions (and, but, or, nor, for, so, yet)
• Lowercase: prepositions (regardless of length)
• Always capitalise first and last word
• Always capitalise the word after a colon

AP Title Capitalization

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

Used in: Journalism, News, PR, Marketing

AP 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

Key Differences Between APA and AP

The most visible differences between APA and AP title case appear in how each style treats prepositions and minor words. APA follows the rule that lowercase: prepositions (regardless of length). AP, by contrast, lowercase: prepositions fewer than 4 letters.

For most titles, the difference is small — one or two words will capitalize differently. But for titles with common prepositions like "about", "through", "between", or "without", the two styles produce noticeably different results.

The first word and last word of any title are always capitalized under both styles, regardless of part of speech. Proper nouns — names of people, places, organizations, and works — are always capitalized in both styles. The substantive differences appear in the middle of a title, where the treatment of prepositions, articles, and conjunctions varies.

Which Style Should You Use

Use APA when writing for Psychology or Social Sciences contexts. Use AP when writing for Journalism or News contexts. If your publication has a specific house style preference, follow that preference over the base standard.

When in doubt, check the submission or publication guidelines for your specific outlet. Academic journals, legal publications, and news organizations each specify which style guide governs their content. If no style is specified and you are writing for general publication, Chicago is a widely accepted default for books and long-form content, while AP is standard for web and news content.

See Both Styles Applied to Your Title

The fastest way to understand the difference between APA and AP is to enter your own title and see both results. Use the style comparison tool to see your title in all nine styles simultaneously, including both APA and AP. Or use the dedicated tools:

• APA title capitalizer
• AP title capitalizer

Read our detailed blog post on AP vs APA title case.

Related Comparisons

• APA vs Chicago title capitalization
• APA vs MLA title capitalization
• Chicago vs MLA title capitalization

Frequently Asked Questions

What is the difference between APA and AP title case?

Despite the similar names, APA and AP have different capitalization rules. APA (American Psychological Association) lowercases all prepositions regardless of length. AP (Associated Press) capitalizes all words of four or more letters — so "From," "With," and "Into" are capitalized in AP but lowercase in APA.

Does AP capitalize more words than APA?

Yes, in most titles. AP capitalizes prepositions of four or more letters — "From," "With," "Over," "Into," "About" — while APA lowercases all prepositions. A title with common prepositions will have notably more capitals in AP than in APA.

How does APA treat prepositions in titles?

APA lowercases all prepositions regardless of length. Short ones (of, in, at) and long ones (between, through, without, about, during) are all lowercase in the middle of an APA title.

How does AP treat prepositions in titles?

AP capitalizes all words of four or more letters, so prepositions of four or more characters — From, With, Into, Over, Than, About, Among, Between, Through — are all capitalized. Only prepositions of three or fewer characters are lowercase.

Should I use APA or AP for journalism?

Use AP for journalism. The Associated Press Stylebook is the standard for newspapers, news websites, press releases, and most media outlets. APA is designed for academic research papers — it is not the journalism standard.

Should I use APA or AP for academic writing?

Use APA for academic writing in the social and behavioral sciences. AP is not an academic style guide — it is designed for fast-paced journalism. Academic journals, theses, and institutional papers in psychology and education use APA.

Can I convert the same title in APA and AP style?

Yes. The Compare Styles tool shows APA and AP (and all 7 other styles) side by side for any title.

Can I compare APA and AP title case side by side?

Yes. Enter any title in the comparison tool and both APA and AP results appear in the same table.