ROT13 Cipher

Encode and decode text using the ROT13 cipher online. Perfect for simple text obfuscation, puzzles, or coding exercises. Quickly shift letters to secure or transform messages in a fun and educational way.

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How Does the ROT13 Cipher Work?
The ROT13 Cipher is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. It’s commonly used to obscure text, puzzles, or spoilers. Simply enter your text, click encode or decode, and get the transformed text instantly. Applying ROT13 twice will return the original text.

Example for ROT13 Cipher

Input
The quick brown fox jumps on the lazy dog
Output
Gur dhvpx oebja sbk whzcf ba gur ynml qbt
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