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Case Converter

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case — paste text, pick a case, copy the result. 100% in your browser.

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Quick answer

Paste your text below, choose a case format, and see the converted result instantly. Copy with one click. All transformations run in your browser \u2014 nothing is sent to a server.

How to convert text case

  1. Paste your text

    Drop your text into the input box — paste a document, title, variable name, or type directly.

  2. Choose a case format

    Select from 9 conversion formats. The output updates instantly.

  3. Copy the result

    Click the copy button to copy the converted text to your clipboard.

Key features

9 case formats

UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case.

Live conversion

The output updates instantly as you type or paste.

100% private

All conversions run locally in your browser — nothing is sent to a server.

Supported formats

  • Plain text
  • Markdown
  • Code
  • HTML
  • CSV

Privacy and security

Your text is processed entirely in your browser using JavaScript. We never see, store, or transmit what you paste.

Limitations

  • Case conversion uses common heuristics — complex identifiers may not convert perfectly.
  • No file upload support — paste text only (no file input).
  • Some Unicode characters may not convert as expected.

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Frequently asked questions

Is this tool free?

Yes — completely free, no sign-up required. All conversions run in your browser and nothing is sent to a server.

What case formats are supported?

We support UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, and kebab-case.

Do you store my text?

No. All transformations happen locally in your browser. Your text never leaves your device.

Can I convert large amounts of text?

There is no hard limit — everything runs in your browser. Very large texts may slow things down, but for normal documents it is instant.

Does it preserve my original text?

Yes. The input is never modified — your original text stays in the input box. The converted result appears in a separate output area.