Case Converter

Convert text between UPPERCASE, lowercase, Sentence case, Title Case, camelCase, snake_case and kebab-case instantly, then copy the result.

The Case Converter instantly switches text between UPPERCASE, lowercase, Sentence case, Title Case, camelCase, snake_case and kebab-case, which is useful for writers cleaning up copy and developers reformatting variable names or file paths. Paste any block of text and choose the case you need from the available buttons.

Conversion happens live in the browser with no character limit imposed beyond what your device can handle comfortably, and the result is ready to copy straight back out. This avoids manually retyping headlines, renaming variables one at a time, or fixing text that was accidentally typed with caps lock left on.

How to use the Case Converter

  1. Paste or type your text into the input box.
  2. Choose the target case: UPPERCASE, lowercase, Sentence case, Title Case, camelCase, snake_case or kebab-case.
  3. Review the converted text shown in the output area.
  4. Click Copy to copy the result to your clipboard.
  5. Repeat with a different case option if you need multiple versions of the same text.

Why use this tool

Covers writing and coding conventions together

Sentence and Title Case suit everyday writing and headlines, while camelCase, snake_case and kebab-case cover programming naming conventions, so the one tool serves both writers and developers.

Fixes accidental caps lock instantly

Text typed entirely in capitals by mistake can be converted straight to Sentence case or lowercase in one click, rather than being retyped from scratch.

Instant, in-browser conversion

There is no processing delay or upload step; the case change is applied to the text as soon as you click the button, keeping the workflow fast for repeated edits.

Common use cases

Title Case versus Sentence case

Title Case capitalises each major word, as in "How to Write Better Copy," and is typically used for headings and titles. Sentence case capitalises only the first word and proper nouns, as in "How to write better copy," and matches normal prose formatting.

Choosing a case for code

camelCase (myVariableName) is the convention for JavaScript and Java variables and functions, snake_case (my_variable_name) is common in Python and SQL, and kebab-case (my-variable-name) is standard for URL slugs and CSS class names. Picking the right one keeps code consistent with the surrounding codebase's style.

Handling punctuation and special characters

Sentence and Title Case preserve existing punctuation and only adjust letter casing, while camelCase, snake_case and kebab-case strip spaces and punctuation to build a single continuous identifier. Numbers and existing hyphens or underscores are generally kept as separators during conversion.

Frequently asked questions

What is the difference between Title Case and Sentence case?

Title Case capitalises each major word (How to Write Better Copy); Sentence case capitalises only the first word and proper nouns (How to write better copy).

Which case should I use for code?

camelCase for JavaScript variables, PascalCase for classes and React components, snake_case for Python and SQL, and kebab-case for URLs and CSS class names.

Is Case Converter free to use?

Yes. Case Converter on Klipza is completely free with no account, no subscription and no watermark on your files, and there is no daily usage limit.

Are my files safe when using Case Converter?

Processing happens locally in your browser wherever technically possible, so your files are not uploaded to a server, stored or shared with third parties.

Does Case Converter work on mobile phones?

Yes. It is fully responsive and runs in any modern browser on Android, iPhone, iPad, Windows and macOS — nothing to install.