What is a text case converter?

A text case converter is a free online tool that instantly changes the capitalization style of any text you type or paste, such as switching normal text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case, without you having to retype anything manually.

Is this text case converter free to use?

Yes. This text case converter is completely free, works directly in your browser on any device, and does not require you to sign up, log in, or install anything.

Does this tool store or upload my text?

No. All conversions happen locally in your own browser using JavaScript. Your text is never uploaded, saved on a server, or shared with anyone.

Can I download the converted text?

Yes. After converting your text, click the Download .txt button to save the result as a plain text file directly to your device.

Does the text case converter work on mobile phones?

Yes. The tool is fully responsive and optimized for mobile phones, tablets, laptops and desktops, so you can convert text case on any device and screen size.

What is the difference between camelCase, PascalCase, snake_case and kebab-case?

camelCase starts with a lowercase letter and capitalizes the first letter of each following word with no spaces, like textCaseConverter. PascalCase capitalizes every word including the first, like TextCaseConverter. snake_case joins words in lowercase using underscores, like text_case_converter. kebab-case joins words in lowercase using hyphens, like text-case-converter. These formats are commonly used for programming variable names, file names and URL slugs.

100% Free · No Signup · Works On Any Device

Text Case Converter — Change Text Case Instantly Online

Convert any text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case and more in one click. A free, fast, mobile-friendly text case changer for writers, students, developers and social media creators — anywhere in the world.

Your text

Converted result

How to Use the Text Case Converter

Paste or type your text into the "Your text" box on the left.
Pick a case style from the buttons above — UPPERCASE, lowercase, Title Case, camelCase and more.
Copy or download your converted text instantly using the buttons below the result box.

Why Use This Text Case Converter

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Instant conversion

Text is converted live in your browser — no page reloads, no waiting.

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Private by design

Nothing you type is uploaded or stored. Conversions run locally on your device.

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Works on any device

Fully responsive layout built for mobile, tablet and desktop screens alike.

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Built for everyone, everywhere

A free global tool with no region locks, no logins, and no hidden fees.

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Download or copy

Save your result as a .txt file or copy it straight to your clipboard.

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12 case styles in one place

From Sentence case to snake_case — every common format, in a single tool.

Supported Case Conversion Types

UPPERCASE — converts every letter to capitals.HELLO WORLD

lowercase — converts every letter to small letters.hello world

Sentence case — capitalizes the first letter of each sentence.Hello world. How are you?

Title Case — capitalizes main words, ideal for headlines.Hello World, How Are You?

Capitalize Each Word — capitalizes every single word.Hello World How Are You

aLtErNaTiNg CaSe — alternates upper and lower letters.hElLo WoRlD

InVERSE / Toggle Case — swaps the case of every letter.hELLO wORLD

camelCase — used for variable names in code.helloWorld

PascalCase — used for class names in code.HelloWorld

snake_case — words joined with underscores.hello_world

kebab-case — words joined with hyphens, common in URLs.hello-world

Remove Extra Spaces — trims and collapses repeated spaces.Hello World

Frequently Asked Questions

Free online text case converter — no signup, no cost, works worldwide on every device.