BYTETOOLS

Case Converter

Convert text between uppercase, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more. Free online case converter.

What is the Case Converter?

The ByteTools Case Converter changes the capitalization of any text with one click. Paste your content and instantly switch between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case or aLtErNaTiNg case — no retyping required.

  • Nine case styles including camelCase, PascalCase and kebab-case
  • One-click conversion — no page reload
  • Copy result to clipboard or download as .txt
  • Handles multi-line text and long documents
  • 100% private — text never leaves your browser
  • Free, no sign-up required

How to use the Case Converter

  1. 1

    Paste or type your text into the input box.

  2. 2

    Click the button for the case you want — for example UPPERCASE, Title Case or snake_case.

  3. 3

    Review the converted text in the result box below.

  4. 4

    Click Copy to send it to your clipboard, or Download to save it as a .txt file.

About the Case Converter

The ByteTools Case Converter changes the capitalization of any text with one click. Paste your content and instantly switch between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case or aLtErNaTiNg case — no retyping required.

It is handy for writers fixing a headline typed with Caps Lock on, developers renaming variables between camelCase and snake_case, and marketers formatting titles consistently. The converted text can be copied to the clipboard or downloaded as a .txt file.

Everything runs locally in your browser with JavaScript. Your text is never uploaded, stored or logged, so it is safe to convert confidential documents, code and drafts.

Frequently asked questions

What is the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every word, the style used for headlines and book titles. Sentence case only capitalizes the first letter of each sentence, like normal prose. Use Title Case for headings and Sentence case for body text.

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

They are programming naming conventions. camelCase (myVariableName) and PascalCase (MyClassName) are common in JavaScript and C#, snake_case (my_variable_name) in Python and SQL, and kebab-case (my-file-name) in URLs and CSS class names.

How do I fix text accidentally typed in all caps?

Paste the text and click Sentence case. The tool lowercases everything and re-capitalizes the first letter of each sentence, restoring normal capitalization in one click instead of retyping the whole passage.

Does the case converter change my punctuation or spacing?

The simple modes (uppercase, lowercase, Title Case, Sentence case and alternating) keep all punctuation, spaces and line breaks exactly as they are. The programming modes (camelCase, PascalCase, snake_case, kebab-case) join words with the convention's separator, so spaces and punctuation between words are replaced.

Is my text uploaded when I convert it?

No. The conversion happens entirely in your browser using JavaScript. Nothing is sent to a server, which makes the tool safe for private notes, source code and unpublished writing.

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