About ROT18 Cipher
ROT18 combines ROT5 (0–9) and ROT13 (A–Z, a–z). Other characters pass through unchanged.
How to use it
- Paste input (or set the options).
- Click Rotate, or press ⌘/Ctrl + Enter.
- Copy the result.
Tool
Apply ROT5 to digits and ROT13 to letters in one pass.
Your data stays in your browser. Nothing is uploaded to our servers.
ROT18 combines ROT5 (0–9) and ROT13 (A–Z, a–z). Other characters pass through unchanged.