Case Converter

Convert text to UPPERCASE, lowercase, Title Case, Sentence case and more. Free online case converter tool.

Everything runs in your browser. Your input is not sent to a server.

How to use the Case Converter

Paste or type your text.
Choose the target case (upper, lower, title, sentence, etc.).
Apply the conversion and copy the result.
Reset or edit and convert again as needed.

How it works

The tool maps each character according to the selected case rule. Title case capitalizes word starts; sentence case capitalizes after sentence boundaries where implemented.

Handy for headlines, code constants, cleaning pasted text and consistent formatting.

Examples

“hello world” → UPPERCASE → “HELLO WORLD”.
“HELLO WORLD” → Title Case → “Hello World”.
“a quick test. another line.” → Sentence case applies leading capitals where supported.

Case Converter FAQ

Does Title Case capitalize every word?

It capitalizes the first letter of each word according to the tool’s rules; small words may or may not stay lower depending on the implementation on the page.

Is my text uploaded?

Conversion runs in your browser. Your text is not sent to ToolBoxy servers for this tool.

Is the Case Converter free?

Yes.