ROT13 Converter

Text Tools 0.0 (0 ratings)

Apply ROT13 encoding/decoding to text (shift each letter by 13 positions).

ROT13 Converter
ROT13 Converter tool for encoding and decoding text using the ROT13 cipher.

ROT13 Converter

Encode and decode text using the ROT13 cipher algorithm

ROT13 Encoder/Decoder
ROT13 is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet.
How ROT13 Works
What is ROT13?

ROT13 (rotate by 13 places) is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. Numbers and special characters remain unchanged.

Key Features
  • Symmetric encryption (encoding = decoding)
  • Preserves letter case
  • Only affects letters A-Z
  • Commonly used in forums and newsgroups
Was this tool helpful?
Tool Information
Category Text Tools
Added Dec 30, 2025
Related Tools
Online Text Editor Word Counter Character Counter