DevUtilX

ROT13 Encoder Online

Encode your text using the classic ROT13 substitution cipher. Runs fully in your browser — fast, private, and secure.

How to Use the ROT13 Encoder

  1. Paste or type your plain text into the input editor
  2. Click the "Encode" button to convert it into ROT13
  3. View the encoded output in the right editor
  4. Use the copy button to copy the ROT13 result

💡 Pro Tip: ROT13 is a simple cipher that shifts letters by 13. Encoding the same text twice will bring it back to the original message.