Rot13 (rot-n) encoder decoder

 
 
This online service encrypt or decrypt text with a ROT13 cipher.
ROT13 (or ROT-13) is a simple encryption cipher. It is a variant of the Caesar cipher.
It shifts each letter (A-Z) 13 places forward along the alphabet, so that:

Welcome to Mobilefish.com
becomes
Jrypbzr gb Zbovyrsvfu.pbz

Besides ROT13 this tool allows you to shift each letter 1 (ROT1) to 25 (ROT25) places along the alphabet.
ROT5, ROT18 and ROT47 are special variants.
  • ROT13 - Transforms only letters.
    Each letter is shifted 13 places:
    abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
    becomes:
    nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM

  • ROT1-ROT4, ROT6-ROT17 and ROT19-ROT25 - Transforms only letters.
    Each letter is shifted N places:
    For example ROT1 (N=1):
    abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
    becomes:
    bcdefghijklmnopqrstuvwxyzaBCDEFGHIJKLMNOPQRSTUVWXYZA

  • ROT5 - Transforms only numbers.
    Each number is shifted 5 places:
    0123456789
    becomes:
    5678901234

  • ROT18 - Transforms only letters and numbers. abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789
    becomes:
    nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM5678901234

  • ROT47 - Transforms ASCII characters 33-126.
    Each character is shifted 47 places:
    !"#$%&'()*+,-./0123456789:;<=>[email protected][\]^_`
    abcdefghijklmnopqrstuvwxyz{|}~
    becomes:
    PQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~!"#$%&'()*+,-./01
    23456789:;<=>[email protected]


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Input rot13 (rot-n) encoder decoder:


Select a cipher:
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Enter the plain text or
the ROTn encoded text *:
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Characters entered:   
Max 100000 characters.
 
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Output online rot13 (rot-n) encoder decoder: