Convert text case online

Convert text case online in seconds with this free case converter. Paste any text and instantly change it to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, or a clean URL slug, then copy the result with one click. It works for headlines, code identifiers, slugs, CSV data, and anything else you need reformatted. Because everything runs 100% in your browser, your text is processed locally and is never uploaded to any server. No sign-up, no limits, and no software to install.

🔒 100% private — files never leave your device

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How to use

  1. Paste or type your text into the input box.
  2. Click the case you want: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, or slug.
  3. Review the converted text, which rewrites in place — apply another case if you like.
  4. Click Copy to put the result on your clipboard, then paste it wherever you need it.

Frequently asked questions

What case formats can I convert to?

You can convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case, and a URL slug. Each option rewrites the text in the box instantly so you can chain conversions if needed.

Is my text uploaded or kept private?

Your text is never uploaded. The converter runs 100% in your browser, so everything is processed locally on your device and nothing is sent to a server — making it safe for sensitive or confidential content.

Is there a limit on how much text I can convert?

There is no fixed character or word limit. Since the conversion happens locally in your browser, you can paste short snippets or large blocks of text, limited only by your device's memory.

What is the difference between camelCase, snake_case, and kebab-case?

camelCase joins words with no spaces and capitalizes each word after the first (myVariableName). snake_case joins lowercase words with underscores (my_variable_name). kebab-case joins lowercase words with hyphens (my-variable-name).

How does the URL slug option work?

The slug option lowercases your text, strips accents and diacritics, and joins words with hyphens to produce a clean, URL-friendly string like my-page-title — ideal for blog post and page URLs.

Do I need to install anything or create an account?

No. The case converter is a free web tool that works directly in your browser with no sign-up, downloads, or installation. Just open the page, paste your text, and convert.

About this tool

Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case or a URL slug. Runs entirely in your browser — your text stays private.

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