返回 Ercc

Case Converter — Change Text Case Online

Convert any text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase or snake_case with one click. 100% browser-based.

7 case modes Real-time CJK safe 100% Private

How it works

Three simple steps — everything happens in your browser.

1

Input your text

Paste or type your text.

2

Adjust options

Choose the mode or options you need.

3

Copy the result

Copy the output with one click.

Why use this tool?

100% Private

Your text never leaves your browser.

Instant & Local

All processing runs in your browser.

Free & Unlimited

No signup, no limits, no ads.

Works Everywhere

Runs on any modern browser and device.

FAQ

Frequently Asked Questions

What is a case converter?

A case converter changes the capitalization of your text — for example turning "hello world" into "Hello World" or "HELLO WORLD". Ercc supports 7 common case styles.

Does it work with Chinese text?

Yes. Chinese characters have no case, so they are left unchanged while Latin letters around them are converted. Mixed Chinese/English text is handled correctly.

Is my text uploaded anywhere?

No. All conversion happens locally in your browser. Your text is never sent to any server.