Case Converter - UPPERCASE, lowercase, Title, camelCase, snake_case

The converter supports twelve styles: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, aLtErNaTiNg case and iNVERSE case — covering every common style used in writing, documentation and code.

camelCase keeps the first word lowercase and capitalises every subsequent word (myVariableName). PascalCase capitalises every word including the first (MyVariableName). snake_case writes everything lowercase with underscores between words (my_variable_name). Pick the one your language or style guide prefers.

The converter splits the input on whitespace, underscores, hyphens, dots and camelCase boundaries before reassembling it in the chosen style. That means it cleanly rewrites identifiers like "userIDList" or "data-export.v2" without losing any tokens in between.

Yes. Each line is converted independently and the original newlines are kept, so pasting a list of headlines, a code block or a CSV column gives you the same shape back — only the casing of each line changes.

Yes. The tool uses the JavaScript Unicode-aware string methods, so accented Latin letters (café → CAFÉ), Cyrillic, Greek and other scripts are upper/lowercased correctly. Non-cased scripts like Arabic or CJK are left untouched, which is the expected behaviour.

Yes. Conversions run entirely in your browser, nothing is uploaded, there are no watermarks and there is no limit on how often you can use it. Copy or download the result the moment it is ready.