Case Converter
Convert text into different letter cases
Free Online Case Converter
Convert your text into 10 letter cases in one place
A paragraph typed with Caps Lock on, a sentence that needs to become a headline, or a variable name for your code — all versions of the same problem: fixing letter case by hand is tedious and error-prone. This tool converts your text into 10 formats with one click: UPPERCASE, lowercase, Title Case, Sentence case, plus camelCase, PascalCase, snake_case and kebab-case for developers — with aLtErNaTiNg and Inverse Case thrown in for fun. Everything is processed entirely in your browser; none of your text is ever sent to a server. Copy the result to your clipboard with a single click.
Features
10 Cases
From one text: UPPERCASE, lowercase, Title, Sentence, camel, Pascal, snake, kebab and more.
Live
Every case updates instantly as you type.
One-Click Copy
Copy any case to your clipboard with a single tap.
100% Private
All conversions run in your browser; nothing is uploaded.
Letter Case Guide
Writing formats
- UPPERCASE: emphasis, acronyms, form fields
- lowercase: fixing caps-lock accidents
- Title Case: headlines and proper names
- Sentence case: normal text flow (first letter capitalized)
- aLtErNaTiNg / Inverse: social media, fun
Developer formats
- camelCase: JavaScript variables (userName)
- PascalCase: class names (UserName)
- snake_case: Python variables (user_name)
- kebab-case: URLs and CSS classes (user-name)
Frequently Asked Questions
Which case should I use where?
Title Case for headlines, Sentence case for normal text, and UPPERCASE for short emphatic phrases. In code, the language's convention decides: JavaScript uses camelCase, Python snake_case, CSS and URLs kebab-case.
What's the difference between camelCase and PascalCase?
Both join words and capitalize each word's first letter; the difference is the first word. camelCase keeps it lowercase (userName), PascalCase capitalizes it too (UserName). Convention: camel for variables, Pascal for class names.
Is my text sent to a server?
No. All conversions run in your browser with JavaScript; nothing you type leaves your device. You can safely convert sensitive content.
Is there a character or word limit?
No practical limit — even long articles convert in one go. Since processing happens on your device, speed depends on your browser, not on text length, and is usually instant.
Does Title Case capitalize every word?
The Title Case button here capitalizes the first letter of every word for simplicity. English publishing style keeps short connectors (of, and, the) lowercase — review the result if you need a formal editorial headline.
Does it handle non-English characters correctly?
Yes — the tool uses locale-aware conversion, so accented letters (é, ü, ñ, ç) and special cases like the Turkish dotted/dotless i are transformed correctly rather than by plain ASCII rules.