Convert text case

Convert text between common capitalization and identifier styles without uploading writing or code. Choose uppercase, lowercase, title case, sentence case, camelCase, or snake_case. The result appears in a separate read-only editor so the original remains available for comparison and another conversion.

Uppercase and lowercase use the browser’s Unicode-aware string conversion. Sentence case lowercases the input and capitalizes letters at the beginning and after sentence-ending punctuation. Title case capitalizes each whitespace-separated word; it is intentionally predictable rather than tied to one publication’s minor-word rules. Camel and snake modes remove punctuation boundaries and create developer-friendly identifiers.

Conversion happens instantly in the current page, with no server, account, or saved history. Copy the result to your clipboard or download it as a UTF-8 text file. The interface remains accessible by keyboard and adapts cleanly to mobile screens, making it useful for writers, editors, marketers, students, and developers working with naming conventions.