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Invert Case

Swap the case of every letter — uppercase becomes lowercase and vice versa — to fix text typed with Caps Lock on.

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Output

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About Invert Case

Invert Case is a free online text tool that runs entirely in your browser. Paste or type your text into the input box and the result appears instantly — nothing is uploaded to any server, so your text stays completely private.

Swap the case of every letter — uppercase becomes lowercase and vice versa — to fix text typed with Caps Lock on. Use the copy button to grab the output with one click, and the clear button to start over. There are no length limits, sign-ups, or downloads required.

The classic rescue for a paragraph typed with Caps Lock on: one pass restores the intended capitalization.

Frequently Asked Questions

Is Invert Case free to use?

Yes. Invert Case is completely free, with no sign-up, no downloads, and no usage limits. You can use it as many times as you like on any device with a web browser.

Is my text uploaded to a server?

No. All processing happens locally in your browser using JavaScript. Your text never leaves your device, which makes this tool safe to use even with sensitive content.