Online Converter for ROT5/ROT13/ROT18/ROT47

This web page allows you to encode/decode a piece of text according to the algorithms ROT5, ROT13, ROT18 or ROT47.

The four ROT algorithms ROT5, ROT13, ROT18 and ROT47 vary in the characters that can be encoded/decoded:

  • ROT5 covers the numbers 0-9.
  • ROT13 covers the 26 upper and lower case letters of the Latin alphabet (A-Z, a-z).
  • ROT18 is a combination of ROT5 and ROT13.
  • ROT47 covers all printable ASCII characters, except empty spaces. Besides numbers and the letters of the Latin alphabet, the following characters are included: !"#$%&'()*+,-./:;<=>?[\]^_`{|}~

The ROT5 lookup table reads:

Plain: 0123456789
ROT5 : 5678901234

The algorithm ROT47 shifts the characters 33 to 126 of the ASCII table by 47 positions.

Note: The converter is released under the GPL and requires JavaScript enabled.

  • Registry Decrypter: tool to view the ROT13 encrypted parts of the Windows registry
  • Caesar cipher encryptor/decryptor based on letter frequencies