Case Converter
A free case converter that changes your text between UPPERCASE, lowercase, Title Case, Sentence case, and developer cases like camelCase, snake_case and kebab-case. Everything runs in your browser as you type, with nothing uploaded and no sign-up.
Convert your text
Type or paste text, pick a case, and copy the result — all in your browser.
How to use the case converter
Paste your text
Type or paste any text into the box. The case converter works live as you type, all inside your browser.
Pick a case
Choose UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, kebab-case or a URL slug. The result updates instantly.
Copy the result
Tap the copy button to grab the converted text and paste it wherever you need it.
What this case converter does (and does not) change
This tool performs pure text transforms: it only changes formatting, never the meaning or the actual words. Switching between UPPERCASE and lowercase, capitalizing each word, or fixing a SHOUTING sentence are all simple string operations that happen entirely on your device.
Title Case follows common English style rules, so it cannot know every proper noun or brand spelling — you may still want to fix names like iPhone or NASA by hand. The developer cases and the slug mode strip spaces and punctuation in predictable ways so the output is safe to drop into code or a URL.
Private by design — no upload, no sign-up
Because the conversion is plain JavaScript running in your browser, your text never leaves your computer and there is no account to create. You can use it offline once the page has loaded, which makes it handy for pasting in private notes, draft headlines or code identifiers.
Frequently asked questions
Is this case converter free?
Yes. It is completely free, with no sign-up and no limits on how much text you convert.
Does my text get uploaded anywhere?
No. All conversions run locally in your browser, so nothing you type is sent to a server.
Which cases are supported?
UPPERCASE, lowercase, Title Case, Sentence case, plus developer cases camelCase, snake_case and kebab-case, and a clean URL slug.
Will it change the meaning of my text?
No. It only changes letter case and formatting — the words themselves stay exactly as you wrote them.
Can I use it on my phone?
Yes. It is a lightweight web page that works in any modern mobile or desktop browser, with one-tap copy.