ROT13 Encoder/Decoder - Encode and Decode ROT13 Text Online
Encode or decode text using the ROT13 cipher — applying it twice returns the original text
Text Tools
ROT13 Encoder/Decoder - Encode and Decode ROT13 Text Online
How to Use
1Type or paste your text into the input box
2The ROT13 result appears instantly — each letter is shifted 13 positions
3Apply ROT13 again to decode back to the original text
Frequently Asked Questions
ROT13 (Rotate by 13) is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. Non-letter characters are unchanged.
Simply apply ROT13 again to the encoded text. Because the alphabet has 26 letters, shifting by 13 twice returns to the original. Just paste the encoded text and the output is the decoded version.