Text Case Converter
Convert text to uppercase, lowercase, title case or sentence case.
Your inputs stay on this device.
Result
—
How to use
Paste or type your text, then run the tool.
How it works
Uses locale-aware Unicode case conversion. Title mode capitalizes whitespace-separated word beginnings; it does not apply editorial title rules. Scripts without letter case remain unchanged.
Example
Hello world becomes HELLO WORLD in uppercase mode.