ConverterROT13
Rotate ASCII Latin letters by 13 positions. The same operation reverses the result; every non-ASCII letter and nonletter remains unchanged.
Apply ROT13
Enter input to begin.
Exact ASCII Profile
| Input | Output |
|---|---|
| Hello | Uryyb |
| Uryyb | Hello |
| ABC xyz | NOP klm |
| café 😀 123 | pnsé 😀 123 |
Reversible Does Not Mean Secure
ROT13 is an involution: applying it twice restores the original ASCII letters. It does not require a key and anyone can reverse it immediately.
Use it for puzzles, demonstrations, or lightweight spoiler concealment, never for passwords, private data, authentication, integrity, or anonymization.
Questions About This Tool
No. Only ASCII uppercase and lowercase Latin letters are rotated.
Apply ROT13 to the result again. The same operation encodes and decodes.
No. It has no secret key and provides no meaningful confidentiality.