Caesar Cipher Tool
Shift each letter of a message by a chosen amount to encode it, or use the negative shift to decode it back — a classic substitution cipher for puzzles and learning.
Text
Phhw ph dw plgqljkw
To decode, use the negative of the shift you originally encoded with (e.g. shifted by 3 → decode with -3). This is a classic substitution cipher for puzzles and learning — not secure for real secrets.
Example input
Shift 3: Meet me
Example output
Phhw ph