Title Case Rules
Title Case capitalizes the first letter of most words in a title or headline. The specific rules vary by style guide: Standard: capitalize everything except short prepositions, articles, and conjunctions. AP Style: capitalize all words of 4+ letters; lowercase short prepositions. Chicago: capitalize the first and last word always.
Which Style Guide Should I Use?
Journalism: AP Style. Books and academic papers: Chicago. Web content: Either — be consistent. Blog headlines: Standard title case. Social media: Whatever looks best.
Should I capitalize prepositions in title case?
Short prepositions (in, on, at, by, for, to, of) are usually lowercased. Longer prepositions (without, between, throughout) are typically capitalized. Style guides differ slightly on this.
Is "Is" capitalized in title case?
Yes. "Is" is a verb, not a preposition or article. Verbs are always capitalized in title case regardless of length.