Is this case converter free to use?

Yes. Case Converter is completely free, with no sign-up, no ads tracking your text, and no usage limits.

Yes. All conversion happens directly in your browser. Your text is never uploaded to any server and never leaves your device.

Does it work offline?

Yes. After your first visit the page is cached, so it works with no internet connection. You can also install it as an app on your phone or computer.

What are camelCase and snake_case used for?

They are naming styles used by programmers. camelCase joins words with no spaces and capitalizes each word after the first (myVariableName). snake_case joins words with underscores in lowercase (my_variable_name).

Convert your text to any case

Paste or type your text, choose a style, and copy the result. Works without internet — your text stays on your computer.

Your text

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Tip: you can drag & drop a text file directly onto the box above.

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Result

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Choose a style

What is a case converter?

A case converter is a free tool that changes the letter case of your text — for example turning lowercase into UPPERCASE, or fixing text that was accidentally typed with Caps Lock on. Instead of retyping everything, you paste your text, pick a style, and copy the corrected version in seconds.

This converter runs entirely in your browser. Nothing is uploaded, so it's safe for sensitive content, and it keeps working even when you're offline.

Every case style explained

Style	What it does	Example
UPPERCASE	Makes every letter a capital	HELLO WORLD
lowercase	Makes every letter small	hello world
Title Case	Capitalizes the main words	Hello World
Sentence case	Capitalizes the first letter of each sentence	Hello world
camelCase	Joins words, capitalizes each after the first	helloWorld
PascalCase	Joins words, capitalizes every word	HelloWorld
snake_case	Joins words with underscores	hello_world
CONSTANT_CASE	Uppercase words joined by underscores	HELLO_WORLD
kebab-case	Joins words with hyphens	hello-world
dot.case	Joins words with dots	hello.world
aLtErNaTiNg	Alternates small and capital letters	hElLo WoRlD
InVeRsE	Swaps the case of every letter	hELLO wORLD

How to use it

Step 1 — Add your text: type it, paste it, upload a .txt file, or drag a file onto the box.
Step 2 — Choose a style: click any of the case buttons. Each one shows an example so you know what you'll get.
Step 3 — Use the result: copy it, download it as a text file, or send it back to the input to convert again.

Frequently asked questions

Is this case converter free?

Yes — it's completely free with no sign-up and no limits on how much text you convert.

Is my text private and secure?

Absolutely. Every conversion happens inside your own browser. Your text is never sent to a server, so it's safe even for confidential or personal content.

Does it work without internet?

Yes. After your first visit the page is saved on your device, so it keeps working offline. You can even install it as an app from your browser's menu.

What's the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of each major word — “The Quick Brown Fox”. Sentence case only capitalizes the first letter of each sentence — “The quick brown fox”.

Is there a limit on text length?

There's no fixed limit for typed or pasted text. Uploaded files are capped at 5 MB to keep things fast in the browser.