Caesar Cipher & ROTX
Encode or decode a Caesar cipher with a custom alphabet shift. Try ROTX rotations and switch direction without changing tools.
Hover over or focus a field for help. Press Escape to close.
How it works
Paste your content or load the example. Choose the available options, run the tool, then copy or download the result.
A practical example
Your text
Hello, World!
Result
Khoor, Zruog!
Frequently asked questions
Is my input sent to a server?
No. Your content is processed in this browser. It is never sent to the server or saved.
What should I know about Caesar Cipher & ROTX?
Shift Latin A–Z letters by 0–25 places; case, punctuation and other characters are preserved. Decode reverses the shift. This historical cipher is for learning and puzzles, not secure encryption.