Convert text case instantly

Eight conversion modes

Choose uppercase, lowercase, title case or sentence case for readable copy. camelCase, snake_case and kebab-case are useful for identifiers, while slug mode creates lowercase URL-style words separated by hyphens.

Conversion is deterministic and runs locally. Review proper names, acronyms and language-specific title rules because automatic casing cannot understand every editorial context.

• UPPERCASE and lowercase
• Title Case and sentence case
• camelCase and snake_case
• kebab-case and URL slug

How words are detected

The converter uses Unicode letters and numbers, so it works with more than basic English text. Programming-style modes remove punctuation and join recognized words with the selected separator.

Slug mode also removes common combining accent marks after normalization. Non-Latin letters remain rather than being automatically transliterated into Latin characters.

Where automatic casing needs review

Title case capitalizes every detected word and does not apply publication-specific rules for short words. Sentence case uses punctuation to find likely sentence starts.

Acronyms may become ordinary words and brand capitalization may change. Compare the output with the original before replacing important content.

Safe workflow for code and URLs

Use camelCase or snake_case for draft identifiers, then verify the naming rules of the target programming language. Use slug mode for a readable path, but check uniqueness before publishing a URL.

The tool does not save input or output. Copy the result before closing the page if you need to keep it.