Text Case Converter — Free Online Tool

Change the letter case of any text instantly — pick a style above and the result appears right in the box. Everything runs locally in your browser; your text never leaves your device.

How it works

1Paste your text into the box above — articles, headings, anything.
2Tap a case style — UPPER, lower, Title, Sentence or aLtErNaTiNg.
3Copy the result with one tap and paste it anywhere.

Frequently asked questions

Is my text sent to a server?

No. The conversion happens entirely in your browser with JavaScript. Your text never leaves your device, so it's safe to use with private or work text too.

Which case styles are supported?

Five styles: UPPER CASE, lower case, Title Case, Sentence case and aLtErNaTiNg cAsE. Title Case keeps spacing intact, and Sentence case capitalizes the first letter after every full stop, exclamation or question mark.

Does it work on my phone?

Yes — the page is fully responsive and the one-tap Copy button works on mobile browsers. Large texts convert instantly.