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Free Case Converter Online

Change text case instantly. Paste your text and convert it to uppercase, lowercase, sentence case, title case, camelCase, snake_case and more—without retyping a thing.

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Sentence case

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🔒 Your text stays on your device and is never uploaded.

How to change text case online

Paste or type your text in the input box, then choose the case style you need. The converted result appears immediately and your original stays available for comparison. Copy the result to your clipboard or download it as a .txt file when you are finished.

Fix capitalization

Use sentence case, lowercase, UPPERCASE, Title Case or Capitalized Case for emails, documents, social posts, headlines and essays.

Format code and URLs

Convert words to camelCase, PascalCase, snake_case, kebab-case or CONSTANT_CASE for variables, file names, slugs and other identifiers.

Convert privately

This free online text case converter works directly in your browser. Copy the result or download a text file without signing up.

Online case converter FAQ

What is a case converter?

A case converter changes text capitalization and, for developer formats, word separators. It saves time when text was typed in the wrong case.

What is the difference between title case and capitalized case?

Title case keeps short connecting words such as “and” or “of” lowercase when appropriate. Capitalized case starts every word with a capital letter.

Can I convert phrases to camelCase or snake_case?

Yes. The converter understands spaces, punctuation, underscores and hyphens, then rebuilds the phrase in the selected format.

Is this online case converter free?

Yes. You can convert, copy and download text for free without creating an account.

Is my text stored or uploaded?

No. Conversion runs locally in your browser. The text you enter is not sent to our servers.

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