Security
ROT47 Cipher
Input
Output
Run process to generate output.
Frequently Asked Questions
How does ROT47 differ from ROT13?
ROT13 only rotates letters (A–Z, a–z). ROT47 rotates all 94 printable ASCII characters (! through ~, codes 33–126). This means digits and punctuation are also transformed, making output look more scrambled than ROT13.
Is ROT47 secure?
No. ROT47 is a fixed, keyless substitution cipher with no secret component — anyone who knows the algorithm (publicly documented) can trivially reverse it. It is used for novelty, obfuscation in puzzles, and hiding spoilers — not for security.
How do I encode and decode with ROT47?
ROT47 is self-inverse: encoding and decoding use the identical operation. Apply ROT47 to encoded text to decode it; apply it to plain text to encode it. This tool performs both automatically.