How to Capitalize a Title Correctly

Title case is the convention of capitalizing the principal words in a heading while leaving certain minor words lowercase. It is what makes a headline read as a headline rather than an ordinary sentence, and it signals care to any reader who notices the details.

The core rule is simple: capitalize nouns, pronouns, verbs, adjectives, and adverbs. The friction comes from the small words in between - the articles, conjunctions, and prepositions that most style guides ask you to leave lowercase unless they sit in a special position.

Every major style keeps the articles a, an, and the lowercase when they fall in the middle of a title. The same goes for the short coordinating conjunctions and, but, or, nor, for, so, and yet. These are the words people most often over-capitalize.

Prepositions are where the guides diverge. AP style lowercases prepositions of three letters or fewer, so words like on and for stay small while longer prepositions such as Between and Through are capitalized. Chicago and MLA take a stricter line and lowercase all prepositions regardless of length, which is why the same title can look slightly different depending on the standard you follow.

There is one rule that overrides everything else: the first and last words of a title are always capitalized, no matter what they are. A title that opens with The or ends with a short preposition still capitalizes that word because of its position.

This is why a heading like Everything You Are Looking For capitalizes For at the end even though it is a preposition. Position beats part of speech, and this single rule prevents most of the awkward-looking results people run into when they try to apply title case by hand.

You can apply these rules by hand, but a converter removes the guesswork and lets you switch between styles instantly. Here is how to run your text through the Title Case Converter.

The most frequent error is capitalizing every single word, which is technically start case rather than title case and reads as heavy-handed. The second is leaving the first or last word lowercase because it happens to be a short preposition or article.

Another trap is mixing styles within a single project. Pick one guide - AP for journalism and web content, Chicago or MLA for academic and publishing work - and stay consistent so your headings feel like they belong to the same document.