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Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case instantly. Free online case converter tool.

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What is a case converter?

A case converter changes the capitalisation style of text: UPPERCASE, lowercase, Title Case, Sentence case, and the programmer conventions camelCase, snake_case and kebab-case.

Each programming ecosystem has its own convention — camelCase for JavaScript variables, snake_case for Python and SQL, kebab-case for URLs and CSS classes. Converting by hand invites typos; a converter does it instantly and consistently.

How to use

  1. 01Type or paste your text into the box.
  2. 02Click any case button — UPPERCASE, camelCase, snake_case and more.
  3. 03The text converts in place; click Copy to grab the result.

Frequently asked questions

What is camelCase used for?
camelCase is the standard naming convention for variables and functions in JavaScript, Java and many other programming languages — the first word is lowercase and each following word starts with a capital letter.
What is the difference between snake_case and kebab-case?
snake_case joins words with underscores and is common in Python and databases. kebab-case joins words with hyphens and is common in URLs and CSS class names.
Can I convert text back after changing the case?
Some conversions lose information (for example, original capitalisation), so keep a copy of your source text if you need to preserve it.

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