Case Converter
Change the case of any text — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case — with one click. It all runs in your browser.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to convert
- 1
Paste or type your text
Type directly or paste your text into the box. It’s processed right in your browser — nothing is uploaded to a server.
- 2
See the result instantly
The tool updates live as you type, showing the converted text with no “submit” button or waiting.
- 3
Copy or keep going
Copy the result with one click, tweak your input, or clear it and start again. Free, instant and private.
Why use Case Converter?
Seven case styles
Upper, lower, title, sentence, camelCase, snake_case and kebab-case — including programmer-friendly identifier formats.
One-click copy
Convert and copy the result instantly; the original text stays in place so you can try another style.
100% private
Everything runs locally in your browser with JavaScript. Your text is never uploaded, stored or seen by anyone — it even works offline.
Works on any device
No install and no account. Runs in any modern browser on Windows, macOS, Linux, Android or iPhone.
From prose to identifiers
Beyond the usual upper/lower/title/sentence cases, the converter also produces camelCase, snake_case and kebab-case — splitting on spaces, punctuation and even camelCase humps — so you can turn a label into a variable name or slug in one step.
When to use each style
Title and sentence case are for headings and body text. camelCase and PascalCase are common in JavaScript and JSON keys. snake_case and kebab-case appear in CSS classes, URLs, Python, and many config files. The tool normalizes the input first so “user name” or “UserName” both become clean versions of the target style.
Frequently asked questions
What is the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word; Sentence case capitalizes only the first letter of each sentence and lowercases the rest.
Is my text uploaded to a server?
No. The tool runs entirely in your browser, so whatever you type or paste stays on your device. It’s safe for code, tokens and confidential text, and works offline once loaded.