ROT13 Converter

Rotate A–Z and a–z by 13 positions while leaving digits, punctuation, and non-ASCII Unicode characters unchanged.

Input

ROT13 output

Self-inverse substitutionApplying ROT13 twice restores the original text. Only ASCII A–Z and a–z letters are rotated.

ROT13 is a reversible ASCII-letter substitution, not encryption

Only A–Z/a–z change. Bytes, Unicode characters outside ASCII letters and security properties are not transformed.