🔠Capitalize proper names by rules

Capitalize proper names by rules

Proper Name Capitalization — Getting Names Right

Getting capitalization wrong in an English name or place name looks awkward or simply incorrect. A generic "capitalize each word" function can't handle surnames starting with Mc or Mac (McDonald, MacArthur), names starting with O' (O'Brien), hyphenated names (Smith-Jones), or the convention of lowercasing articles and prepositions in titles (War of the Roses). This tool applies all of these rules to clean up your input.

Rules applied:
- Capitalizes the first letter of each word
- Capitalizes the letter after Mc/Mac prefixes
- Capitalizes the letter after an apostrophe (')
- Capitalizes each part of a hyphenated name
- Lowercases articles, prepositions, and conjunctions mid-title (except the first/last word)

Use cases:
- Cleaning up name formatting in spreadsheet or CSV lists
- Getting accurate casing for place names, book titles, and movie titles
- Fixing names entered in all caps by autofill forms

All processing happens in your browser — the name you enter is never sent to a server.

FAQ

Does it handle names with an internal capital, like McDonald?

Yes. Surnames starting with Mc or Mac also capitalize the letter right after the prefix — mcdonald becomes McDonald, and macarthur becomes MacArthur.

Why do words like 'of' and 'the' stay lowercase?

By standard title-case convention, articles, prepositions, and conjunctions (a, an, the, of, and, etc.) are lowercased in the middle of a title or place name. The first and last words are always capitalized regardless.

Does it support names with apostrophes, like O'Brien?

Yes. The letter right after an apostrophe (') is also capitalized, so names like O'Brien and D'Angelo come out correctly.