Atbash Cipher
Encode and decode text with the Atbash cipher — mirror the alphabet so A↔Z, B↔Y, C↔X, etc.
100% client-side · no upload
How to use
- Paste or type your text in the input box.
- Click "Apply Atbash" — the encoded output appears instantly.
- To decode, paste the encoded text in the input and click Apply Atbash again.
Related tools
- ROT13 — rotate letters by 13 positions
- Caesar Cipher — custom shift amount
- Morse Code Translator — dots and dashes
More ways to use this tool
Frequently Asked Questions
- What is the Atbash cipher?
- The Atbash cipher is a substitution cipher that maps each letter to its mirror in the alphabet: A↔Z, B↔Y, C↔X, etc. It originated in the Hebrew alphabet and appears in the Bible (e.g. "Sheshach" for "Babel" in Jeremiah 25:26). Applying Atbash twice returns the original text.
- Does my data leave my device?
- No. The Atbash transformation runs entirely in your browser as pure JavaScript.
- Does it work on mobile?
- Yes. Text is transformed instantly on click in any modern mobile browser.
Last updated: By jarvisbox