Case Converter

Different contexts demand different text casing. Title Case (The Quick Brown Fox) is standard for headlines, book titles, and headings — AP style capitalizes words with 4+ letters, while Chicago style capitalizes all words except articles, conjunctions, and short prepositions. Sentence case (The quick brown fox) capitalizes only the first word and proper nouns, preferred by APA style and most European publications. UPPERCASE works for acronyms (NASA, FAQ), short labels, and emphasis (but reads as shouting in longer text). lowercase is standard for URLs, CSS class names, and most file names. Programming introduces specialized formats: camelCase (firstName) for JavaScript variables and Java methods, PascalCase (FirstName) for class names in C# and React components, snake_case (first_name) for Python variables and database columns, kebab-case (first-name) for CSS classes and URL slugs, and CONSTANT_CASE (MAX_VALUE) for constants in most languages. This converter supports all 12+ formats with one-click conversion and copy, all running locally in your browser.

When migrating between programming languages or naming conventions, bulk case conversion saves significant time. A database column named user_first_name (snake_case) needs to become userFirstName (camelCase) in JavaScript or UserFirstName (PascalCase) in C#. Converting a list of 50 column names manually is tedious and error-prone. This tool handles batch conversion — paste your list (one item per line or comma-separated) and convert all items at once. For SEO professionals, converting page titles to URL slugs requires lowercase with hyphens: "How to Build a Website in 2024" becomes "how-to-build-a-website-in-2024." Content teams often need to convert between headline formats: "PRESS RELEASE: NEW PRODUCT LAUNCH" (all caps from a legacy system) to "Press Release: New Product Launch" (title case for publication). The converter also handles special characters: German umlauts (u, o, a) in uppercase become U, O, A, and the French c becomes C. Turkish dotless i (i/I) follows different rules than English i/I — locale-aware conversion handles these correctly.