What is this tool?
This case converter changes text between writing and naming styles. Paste into the Text box and click a button such as UPPERCASE, Title Case or snake_case. The text in the box is converted in place, and Undo puts it back. Title Case follows AP, APA, Chicago or MLA rules for small words, and can keep acronyms and brand names like NASA or iPhone as written. Other styles include Sentence case, Capitalized Case, iNVERSE cASE, No accents, camelCase, PascalCase, kebab-case, CONSTANT_CASE, dot.case, path/case and slugify. Live conversions shows every style at once, and tapping a row copies it. Everything runs in your browser.
How to Use
- Type or paste your words into the Text box.
- Click a case button, or press Alt+U, Alt+L, Alt+T, Alt+S or Alt+C, to convert the text in the box.
- For Title Case, pick AP, APA, Chicago or MLA in Title Case style.
- Press Undo (Alt+Z) to go back, then Copy or Download .txt to keep the result.
- To copy a style without changing your text, tap its row in Live conversions.
Frequently Asked Questions
How does it split camelCase or snake_case input into words?
It adds a break between a lowercase letter and the capital that follows it, and it treats underscores, hyphens, dots and slashes as spaces. For example, userIDNumber becomes user_id_number in snake_case.
Does Title Case keep small words like and or of in lowercase?
Yes. Articles, short conjunctions and prepositions stay lowercase unless they are the first or last word or follow a colon. AP and APA lowercase only short prepositions, while Chicago and MLA lowercase all of them.
Why did slugify change some characters?
Accents are removed first, so Café becomes cafe and Straße becomes strasse. Everything other than letters and digits becomes a single hyphen, and emoji are dropped, so the slug is safe in a URL.
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