Atbash Cipher
Reverse-alphabet substitution cipher (A↔Z, B↔Y…).
About this tool
Atbash is one of the oldest substitution ciphers — each letter maps to its alphabet mirror. It's its own inverse: encoding twice gets you back the original.
Reverse-alphabet substitution cipher (A↔Z, B↔Y…).
Atbash is one of the oldest substitution ciphers — each letter maps to its alphabet mirror. It's its own inverse: encoding twice gets you back the original.