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ROT13 Cipher

Conversion

Apply ROT13 substitution cipher to encode or decode text instantly.

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ROT13 replaces each letter with the 13th letter after it. Since the alphabet has 26 letters, encoding and decoding produce the same result.

Quick answers for ROT13 Cipher

What does the ROT13 Cipher do?
Apply ROT13 substitution cipher to encode or decode text instantly. The ROT13 Cipher is one of 900+ free developer tools on Toolblip - all open to use without a signup.
How do I use the ROT13 Cipher?
Open the ROT13 Cipher on this page, paste or upload your input, and the result updates as you type. Use the copy button to grab the output, or adjust options to tune the result. Nothing you enter leaves your browser.
Is the ROT13 Cipher free to use?
Yes. The ROT13 Cipher is a free online tool on Toolblip - no signup, no account, no hidden usage limits. It runs in your browser and works on desktop and mobile.
Is the ROT13 Cipher safe and private?
Yes. The ROT13 Cipher processes your data entirely client-side, so nothing you paste is uploaded or stored on any server. It's safe to use with internal snippets, private keys for debugging, or any other sensitive content you'd rather not send to a remote service.
Is my data kept private when I use the ROT13 Cipher?
Yes. The ROT13 Cipher converts everything locally in your browser. Nothing is uploaded, logged, or stored on a server, so it's safe to paste confidential data while debugging.
Can I use the ROT13 Cipher offline?
Once the page has loaded, the ROT13 Cipher continues to work without an internet connection. Bookmark this page and return to it anytime - all logic runs locally.