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.

How to use this ROT13 Converter

Apply the reversible ROT13 substitution to ASCII letters. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.