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Case Converter

Free text case converter: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more — instantly in your browser.

Change Text Case Instantly

Accidentally left caps lock on? Need a headline in Title Case, a variable in camelCase, or a URL slug in kebab-case? This free case converter transforms any text into ten different capitalization styles with one click — no retyping, no manual fixes, and no upload: everything runs in your browser.

Paste your text, hit the style you need, and copy the result. The Undo button restores the previous version, so you can try several styles without losing your original.

The Ten Styles Explained

  • UPPERCASE / lowercase — every letter up or down; the classic caps lock fix.
  • Title Case — Every Word Capitalized; for headlines, book titles, and navigation labels.
  • Sentence case — only sentence starts capitalized; for turning SHOUTED text back into normal prose.
  • aLtErNaTiNg CaSe — the sarcastic meme case.
  • camelCase / PascalCase — programming identifiers in JavaScript, Java, C#, and friends.
  • snake_case / CONSTANT_CASE — Python variables and configuration constants.
  • kebab-case — URL slugs, CSS classes, and file names.

Smart Word Detection

For the programming styles, the converter understands more than spaces: it splits on hyphens, underscores, and punctuation, and it recognizes existing camelCase boundaries — so someVariableName becomes some_variable_name in one click. That makes it a quick refactoring companion when moving identifiers between languages with different conventions.

Frequently Asked Questions

How do I convert text from UPPERCASE to lowercase?

Paste your text into the box and click the lowercase button — the whole text converts instantly. Click Copy to grab the result, or Undo to restore the previous version.

What is the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every word ("The Quick Brown Fox"), which suits headlines and titles. Sentence case capitalizes only the first word of each sentence ("The quick brown fox."), which suits normal prose.

What are camelCase, snake_case, and kebab-case for?

They are naming styles used in programming: camelCase (JavaScript variables), PascalCase (class names), snake_case (Python variables), kebab-case (URLs and CSS classes), and CONSTANT_CASE (constants). The converter detects word boundaries in your text — including existing camelCase — and rebuilds it in the chosen style.

Can I undo a conversion?

Yes — the Undo button restores the text exactly as it was before your last conversion, so experimenting is risk-free.

Is my text sent to a server?

No. Conversion happens entirely in your browser, and your text is saved only to your own device so it is still there when you return.

Text case converter with ten conversion styles including camelCase, snake_case, and Title Case
One click converts your text between ten cases — with undo if you change your mind.

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