Caesar Cipher & ROT13

Encode or decode text with the classic Caesar shift cipher. ROT13 is the special 13-shift case — same operation encodes and decodes. Adjustable shift 1–25, preserves case and punctuation.

Input

Shift: 3

Output

ROT13 is symmetric: encoding and decoding use the same shift of 13. The Caesar cipher is famous as one of the earliest known substitution ciphers.