Case Converter

The Case Converter is a Swiss-army knife for transforming the capitalization of any text. Whether you need to clean up copy-pasted content that arrives in ALL CAPS, format a headline in Title Case for an article, or convert a label into camelCase for a variable name, this tool handles every common case style in a single click.

Writing and editing workflows frequently involve inconsistent capitalization — especially when content is compiled from multiple sources, transcribed from audio, or imported from spreadsheets. Manually retyping each word is tedious and error-prone. This converter applies a consistent rule across your entire text instantly, so 'hELLo wORld' becomes 'Hello World' (Title Case), 'hello world' (Sentence case) or 'HELLO WORLD' (UPPER CASE) without manual cleanup.

For developers, the camelCase, snake_case, kebab-case and CONSTANT_CASE modes are invaluable. Database column names typically use snake_case, URL slugs use kebab-case, JavaScript variables use camelCase, and configuration constants use UPPER_SNAKE (CONSTANT_CASE). Converting between them by hand across dozens of identifiers is a recipe for bugs. Paste the list, pick the target case, copy the result.

Title Case is smart about small words — articles, conjunctions and short prepositions (a, an, the, and, but, or, for, nor, of, in, on, at, to, by) stay lowercase unless they start the sentence. Sentence case capitalizes only the first letter of each sentence. Everything runs locally and works on arbitrarily long text.