Title Case capitalizes the first letter of each major word. It's used for headlines, book titles, and headings.

camelCase joins words without spaces, capitalizing each word except the first. Used in JavaScript variables and JSON keys.

snake_case replaces spaces with underscores and uses all lowercase. Common in Python, databases, and file names.

kebab-case replaces spaces with hyphens and uses all lowercase. Common in URLs, CSS class names, and HTML attributes.

Is my text stored anywhere?

No. All conversions happen entirely in your browser. Nothing is sent to any server.

Can I convert code variable names?

Yes! camelCase, PascalCase, snake_case, and CONSTANT_CASE are specifically designed for developers renaming variables.

Aa Content & Writing

The Ultimate
Case Converter

10 transformation modes. Live preview. Copy in one click. Built for writers, devs, and everyone in between.

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Mode

Live Preview UPPERCASE

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Mode: UPPERCASE

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Quick Mode Reference

UPPERCASE HELLO WORLD

lowercase hello world

Title Case Hello World

Sentence case Hello world

aLtErNaTiNg hElLo wOrLd

camelCase helloWorld

PascalCase HelloWorld

snake_case hello_world

kebab-case hello-world

CONSTANT_CASE HELLO_WORLD

Conversion History

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Frequently Asked Questions

Title Case capitalizes the first letter of every major word. It's the standard for book titles, article headlines, movie names, and headings. Use it whenever you want to give text the authority of a proper title.

Both join words without spaces. camelCase starts with a lowercase letter (helloWorld) — common in JavaScript variables and JSON keys. PascalCase starts every word with uppercase (HelloWorld) — used for class names, components, and constructors.

snake_case (underscores) is the convention in Python, databases, and many config files. kebab-case (hyphens) is standard in URLs, CSS class names, and HTML attributes. Knowing which to use keeps your code consistent and readable.

Never. Every single conversion happens entirely inside your browser using JavaScript. No data leaves your device, no server ever sees your text. Fully private, fully offline-capable.

CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is used for constants and environment variables across most languages — like MAX_RETRY_COUNT or API_BASE_URL. It signals "this value never changes."

Yes! Paste in as much text as you need. All modes work on the entire input, including multi-paragraph content. Sentence case intelligently capitalizes only the first letter of each sentence.

About This Case Converter

Whether you're a developer renaming variables, a writer polishing headlines, or a content creator formatting social media posts — having the right text case matters more than most people realize. This tool brings together 10 of the most commonly needed text transformations in one place, with live preview so you can see the result instantly as you type.

For developers: camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE are the five naming conventions that cover virtually every language and framework. For writers: uppercase, lowercase, title case, and sentence case handle every editorial need. And for fun — alternating case is always there when you need it.

The UltimateCase Converter

About This Case Converter

The Ultimate
Case Converter