Case Converter

Paste your text, pick a case and copy the result. Works for headlines, sentences and programming identifiers.

Free · Runs in your browser · Your text is never uploaded

The text hello world converted between lowercase, UPPERCASE and Title Case

What each case does

  • UPPERCASE / lowercase: changes every letter.
  • Title Case: capitalizes the main words and keeps short words like “of”, “and” and “the” in lowercase (except at the start and end), following common headline style.
  • Sentence case: capitalizes the first letter of each sentence and the pronoun “I”.
  • camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE: programming naming styles. Words are split on spaces, punctuation and existing case boundaries, so helloWorld and hello_world convert cleanly.

Tips

Style guides differ on title case (AP, Chicago and APA each treat short words slightly differently), so check any proper nouns and acronyms after converting. For code, kebab-case is common in URLs and CSS, snake_case in Python and databases, camelCase in JavaScript and PascalCase for class names.

Popular case converter presets

Frequently asked questions

What is the difference between Title Case and Sentence case?

Title Case capitalizes most words (as in a headline), while sentence case capitalizes only the first word of each sentence and proper nouns.

Does the converter handle accented letters?

Yes. It uses Unicode-aware case rules, so letters like é, ü and ñ convert correctly.

Can I convert several lines at once?

Yes. Programming cases (camel, snake, kebab and so on) convert each line separately, so you can paste a list of names.

Is anything sent to a server?

No. Conversion happens in your browser.

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