Atbash Cipher Translator
What is Atbash Cipher Translator?
Atbash Cipher Translator encodes text with the classic Atbash substitution cipher, where A becomes Z, B becomes Y and so on. Encoding and decoding use the same operation, so paste an encoded message to decode it back. The translation runs instantly in your browser and is free with no signup.
How to use
- Type or paste your text into the input box.
- The Atbash encoded version appears instantly below.
- Paste encoded text instead to decode it back to plain text.
- Click Copy result to copy the output.
Features
- Instant Atbash encoding and decoding.
- Same operation reverses the cipher, no mode switching needed.
- Preserves letter case: uppercase stays uppercase.
- Numbers, punctuation and spaces are left untouched.
- Translation happens in your browser, nothing is uploaded.
- Free, private, and no signup required.
Frequently asked questions
What is the Atbash cipher?
Atbash is a simple substitution cipher that replaces each letter with its mirror in the alphabet: A becomes Z, B becomes Y, C becomes X, and so on.
How do I decode an Atbash message?
Paste the encoded text into the box. Because Atbash is its own reverse, the same operation that encoded it decodes it back.
Does it change numbers and punctuation?
No. Only letters A to Z are substituted. Numbers, punctuation, spaces and line breaks are kept exactly as they are.
Is the Atbash cipher secure?
No. It is a classical cipher used for puzzles and fun, not real security. It is very easy to break by hand.
Is this tool free?
Yes, it is free with no signup and no limits.
Is my text sent to a server?
No. The cipher runs in your browser with JavaScript, so your text never leaves your device.