🪞 Atbash Cipher

The Atbash Cipher atbash substitution cipher. It runs entirely in your browser — nothing is sent to a server.

Steps

1. Paste or type your text in the Input box above.
2. Click Run Atbash Cipher (or use the Load sample button to try it first).
3. Copy the result with one click.

Tips

• Your text stays on your device. We never upload or store it.
• The tool works offline once the page has loaded.
• Need to do this often? Bookmark this page and come back anytime.

About the Atbash Cipher

Apply the ancient Atbash cipher where A↔Z, B↔Y, C↔X, and so on. The cipher is its own inverse.