What is Case Converter?
Case Converter is a free online tool that transforms your text between 12 different case formats instantly. Whether you need UPPERCASE for headings, camelCase for code, or kebab-case for URLs — just paste, pick, and copy.
How to use
- Type or paste your text into the input area
- Click one of the case format buttons below
- Copy the converted result or download as a file
Examples
| Input | Case | Output | |-------|------|--------| | hello world | UPPERCASE | HELLO WORLD | | HELLO WORLD | lowercase | hello world | | hello world | Title Case | Hello World | | hello world | camelCase | helloWorld | | hello world | snake_case | hello_world | | hello world | kebab-case | hello-world | | myVariable | CONSTANT_CASE | MY_VARIABLE |
Limitations
- Maximum input size: 1,000,000 characters
- Browser requirements: Any modern browser
- Title case capitalizes every word — does not handle articles/prepositions (a, the, of) specially
- Sentence case detection uses
.,!,?as sentence boundaries - camelCase/PascalCase/snake_case conversions split on non-alphanumeric characters and camelCase boundaries
Best practices
- Use camelCase and PascalCase for JavaScript/TypeScript variables and classes
- Use snake_case for Python or database column names
- Use kebab-case for URL slugs and CSS class names
- Use CONSTANT_CASE for environment variables and constants