ROT13 / Caesar Cipher
Rotate letters by any shift (13 = ROT13).
→ encode
Input0 chars · 0 bytes
Output
About this tool
A Caesar cipher (or ROT) shifts each letter in the alphabet by a fixed number of positions. ROT13 (shift of 13) is a well-known simple obfuscation method that is its own inverse.
Common use cases
- Lightly obfuscate spoilers, answers or sensitive notes in plain text
- Experiment with classical substitution ciphers
- Quick reversible transformation for puzzles or demos
Further reading
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