Free Online Case Converter
Rules are language-aware: small words such as of and the stay lowercase in titles, and snake or kebab output is safe for filenames and code.
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How to use Case Converter
- Paste the text.
- Choose a case.
- Copy or download the result.
Questions about Case Converter
Why is Title Case not perfect on my headings?
Acronyms and brand names are exceptions; edit them in the output or turn off smart titles.
Does it handle accents?
Yes, the conversion is Unicode-aware so É, ß and ı keep their language rules where possible.
About Case Converter
Switch text between upper and lower case with our free online Case Converter. 100% browser-based, fast, and private—no login or file uploads required.
These text and code tools clean and transform strings: count words, convert case, deduplicate lines, encode or decode Base64 and URLs, escape entities, hash, format JSON and compare two versions.
This tool runs in your browser. The file is not uploaded. Everything runs on the text you paste, so you can safely process snippets of code or logs; nothing is sent anywhere, and clearing the box removes it from memory.