Case Converter — Transform Text to Any Case Instantly
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, PascalCase, kebab-case & more. Perfect for developers, writers, and anyone who works with text. 100% browser-based — your text never leaves your device.
🎨 Choose a Case Style
What is a Case Converter?
A case converter is a text transformation tool that changes the capitalization style of your text. Whether you're a developer who needs to convert variable names to camelCase or snake_case, a writer who wants proper Title Case headings, or a student formatting essays with correct Sentence case — this tool handles it all instantly with zero effort.
WorldOfTools Case Converter supports 12 case styles, works on any device, and processes everything locally in your browser. Your text never leaves your device.
How to Use the Case Converter — Step by Step
Paste or Type your text in the input box on the left. You'll see live word, character, and line counts update instantly.
Click Any Case Button — from UPPERCASE to snake_case — the converted output appears immediately on the right.
Copy, Download, or Swap — hit Copy to clipboard, Download as .txt file, or Swap input/output panels to continue transforming.
📋 All Supported Case Styles Reference
| Case Style | Example | Common Use |
|---|---|---|
| UPPERCASE | HELLO WORLD | Titles, headers, emphasis |
| lowercase | hello world | Filenames, general text |
| Title Case | Hello World | Book titles, headings |
| Sentence case | Hello world | Normal prose, emails |
| camelCase | helloWorld | JavaScript, Java variables |
| PascalCase | HelloWorld | Class names, React components |
| snake_case | hello_world | Python, SQL, Ruby |
| SCREAMING_SNAKE | HELLO_WORLD | Constants in most languages |
| kebab-case | hello-world | CSS classes, HTML, URLs |
| dot.case | hello.world | Config files, namespaces |
| aLtErNaTiNg | hElLo WoRlD | Memes, humor, sarcasm |
| iNVERSE | hELLO wORLD | Stylistic, emphasis |
Frequently Asked Questions
What is camelCase and when should I use it?
camelCase capitalizes the first letter of each word except the first, with no separators: myVariableName. It's widely used in JavaScript, Java, TypeScript, and JSON property names.
What is snake_case and when is it used?
snake_case uses underscores between words, all lowercase: my_variable_name. It's the standard in Python, Ruby, SQL column names, and database schemas.
What is kebab-case used for?
kebab-case uses hyphens between words: my-variable-name. It's the standard convention for CSS class names, HTML data attributes, and URL slugs.
What's the difference between camelCase and PascalCase?
camelCase: helloWorld (first word lowercase). PascalCase: HelloWorld (all words capitalized). PascalCase is used for class names in C#, Java, TypeScript, and React components.
Does this work on mobile phones?
Yes, fully. The Case Converter is 100% responsive and works perfectly on iOS, Android, tablets, and all desktop browsers with no app installation required.
Is my text stored or shared anywhere?
No. All text processing happens entirely in your browser using JavaScript. Your text is never uploaded to any server, never stored, and never shared with anyone.
Can I convert long documents or articles?
Yes. The tool handles any amount of text — from a single word to entire articles. For very large files, use the Download button to save the output as a .txt file.