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Convert text to UPPERCASE, camelCase, snake_case, kebab-case and 9 more formats — live preview of all at once.
HELLO WORLDHeadings, emphasis, constants
hello worldEmails, general text
Hello WorldTitles, headings, names
Hello worldParagraphs, messages
helloWorldJavaScript, Java variables
HelloWorldClasses, React components
hello_worldPython, SQL columns
hello-worldURLs, CSS classes, HTML
HELLO_WORLDConstants, env variables
hello.worldFile names, namespaces
hElLo WoRlDMocking spongebob meme 😄
hELLO wORLDFlipping existing casing
camelCase joins words without spaces, capitalizing each word after the first. E.g. 'hello world' becomes 'helloWorld'. Used widely in JavaScript and Java variable names.
snake_case joins words with underscores and uses all lowercase. E.g. 'hello world' becomes 'hello_world'. Common in Python and database column names.
kebab-case joins words with hyphens in lowercase. E.g. 'hello world' becomes 'hello-world'. Used in CSS class names, URLs, and file names.
Title Case capitalizes the first letter of every word. E.g. 'hello world' becomes 'Hello World'. Used in headings and titles.
Yes! Paste any amount of text — the converter handles multiple lines and paragraphs while preserving the original line structure.
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