Case Converter

Runs entirely in your browser

Convert text between common case styles directly in your browser. Type or paste your text, then click a style to convert it.

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camelCase, PascalCase, snake_case and kebab-case work best on short text such as titles or variable names.

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How to use Case Converter

  1. Type or paste your text into the box.
  2. Click the case style you want to apply.
  3. Copy the converted text with one click.

Features

  • Eight common case styles in one click.
  • Live character and word counts.
  • One-click copy.
  • 100% client-side — your text never leaves your browser.

Example

Starting from the phrase Free Online Text Tools, each button produces:

UPPERCASE:    FREE ONLINE TEXT TOOLS
lowercase:    free online text tools
Title Case:   Free Online Text Tools
Sentence case: Free online text tools
camelCase:    freeOnlineTextTools
PascalCase:   FreeOnlineTextTools
snake_case:   free_online_text_tools
kebab-case:   free-online-text-tools

Tips for developers and writers

  • camelCase, PascalCase, snake_case and kebab-case treat any run of spaces, punctuation or hyphens as a single word break — so "e-mail address" becomes "eMailAddress", not "e-mailAddress".
  • These four styles also split existing camelCase text back into words before re-casing, so pasting "helloWorld" and clicking snake_case correctly produces "hello_world" rather than "helloworld".
  • Sentence case lowercases the whole text first, then capitalizes only the letter at the very start and right after a period, question mark or exclamation mark — it won't remove capital letters you've placed in the middle of a sentence for another reason, like a proper noun, without lowercasing everything else too.
  • Each button replaces the text in the box immediately, so chain conversions if needed — for example click UPPERCASE, then lowercase, then Title Case — since there's no separate "undo" for case changes.

Is Case Converter safe?

Yes. Case Converter re-splits and re-cases your text with local JavaScript — including the camelCase-aware word detection described above — so nothing you type is uploaded to a server, and nothing is kept once you close or refresh the tab.

Frequently Asked Questions

What case styles are supported?

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

Do camelCase and snake_case work on full sentences?

They work best on short text like titles or variable names. Spaces and line breaks are collapsed into a single separator, which is standard for these programming case styles.

Does converting case modify my original text?

Clicking a case button replaces the text in the box with the converted version, so you can copy the result immediately.

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