Case Converter
camelCase, snake_case, etc.
helloWorldConvertMyCase
What is Case Converter?
Transform text between eleven case conventions: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case, slug-case, and iNVERSE cASE. Word boundaries respect existing case, so "XMLParser" tokenises cleanly into "XML" and "Parser" rather than a single blob. Works with any input length; output updates live as you type.
How do I use Case Converter?
- Paste text into the input panel.
- Click a case style chip at the top.
- Copy the output.
When should I use Case Converter?
Case Converter handles general case transforms. For making a URL-safe slug specifically (with diacritic stripping and length caps), use Slug Generator. To count characters or words while you edit, use Character Counter or Word Counter.
Which case styles are supported?
UPPER, lower, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and inVeRsE cAsE. Pick any of the ten; previews update live.
Does Title Case capitalise small words?
It follows AP / Chicago style: articles, short prepositions, and conjunctions stay lowercase unless they are the first word. Toggle "All words capitalised" if you want a simpler rule.
Can I convert code identifiers?
Yes. camelCase ↔ snake_case ↔ kebab-case ↔ PascalCase conversions preserve word boundaries correctly, making the tool useful for renaming variables across languages.
Is my file uploaded anywhere?
No. Everything runs in your browser. Your files never leave your device, and there is no server component for this tool.