Caesar Cipher
Encode and decode text with a Caesar shift cipher.
Input
Output
Shift each letter by a chosen amount to encode or decode a classic Caesar cipher. A shift of 13 is the same as ROT13.
How to use
- Set the shift amount.
- Choose encode or decode.
- Type your text and copy the result.
Frequently asked questions
- Is it secure?
- No, a Caesar cipher is trivially broken; it's for learning and puzzles.
- How is it related to ROT13?
- ROT13 is simply a Caesar cipher with a shift of 13.