Case Converter

How to use Case Converter

Type or paste your text into the input box above.
Click a case button — UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg or iNVERSE — the output updates live as you type.
Copy the result, download it as a .txt file, or clear to start over.

Is Case Converter free to use?

Yes. Case Converter is completely free, with no sign-up, no daily limit, and no watermark on what you download.

Is my data uploaded to a server?

No. Case Converter runs entirely in your browser using JavaScript — nothing you type or upload ever leaves your device.

Which letter cases are supported?

UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg cAsE and iNVERSE cAsE — six conversions, applied instantly as you type.