Convert text case — UPPER, lower, Title, camelCase & more

Fix capitalization in one click

A headline typed in a hurry, A SENTENCE THAT ARRIVED IN CAPS, a list of product names that needs Title Case, a label that must become a snake_case variable — recasing text by hand is exactly the kind of five-minute chore that should take five seconds. Paste, click a style, copy. The conversion happens live in your browser and handles any amount of text instantly.

The seven styles, and when each is right

UPPERCASE for emphasis, legal headings, and acronym cleanup — sparingly, since all-caps reads as shouting. lowercase resets over-styled text to a clean baseline. Title Case is the standard for headlines, book and section titles: major words capitalized, small connector words left down.Sentence case — capital first letter per sentence only — is what most modern interfaces and publications use for headings, and the safest default when unsure.

The developer trio: camelCase (JavaScript variables, JSON keys),snake_case (Python, databases, config files), andkebab-case (URLs, CSS classes, filenames). This tool tokenizes your text on spaces, punctuation, and existing case boundaries, so User Name,user_name, and userName all convert cleanly between styles — useful when renaming across a codebase or turning headlines into URL slugs.

Title Case is trickier than it looks

Capitalizing every word ("The Quick Fix For Your Files") looks amateur; the convention shared by AP, Chicago, and most publishers keeps short conjunctions, articles, and prepositions lowercase unless they begin or end the title. This tool applies that shared core automatically. Individual style guides disagree at the edges (four-letter prepositions, hyphenated compounds), so for formal publication give the result the thirty-second human read — everywhere else, it's ready as-is.