Tool to decrypt/encrypt digits with Rot5. ROT-5 is an application of ROT-13 to the numbers, the shift of 5 makes the cipher reversible for numbers.
ROT-5 Cipher - dCode
Tag(s) : Substitution Cipher
dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!
A suggestion ? a feedback ? a bug ? an idea ? Write to dCode!
ROT-5 Cipher
ROT5 Decoder
ROT5 Encoder
Answers to Questions (FAQ)
What is the ROT-5 Cipher? (Definition)
The ROT-5 cipher is a simple encryption method that involves shifting each digit 5 positions in 0123456789.
NB: it can also involve shifting letters 5 positions in the alphabet (see ROT cipher).
How to encrypt using Rot5?
How to decrypt Rot-5 cipher?
Decryption of Rot5 is identical to the encryption because Rot5 is reversible.
6789012345
1234567890
Example: 793 re-becomes 248 by ROT-5
How to recognize ROT-5 ciphertext?
ROT-5 converter is used on the digits. Numbers that began with 1 now begin with 6, the 2s become 7s etc. The shifting by 5 continues so on.
According to Benford's law, there should be more 6 than 4 among the first digits of the numbers in the ciphertext.
What are the variants of the Rot-5 cipher?
Rot-5 is already a variant of Rot13, itself a version of Caesar cipher with a shift of 13. Rot-5 is therefore a Caesar cipher with a shift of 5, but applied to an alphabet of digits.
It is common to associate a ROT-13 for coding the letters and ROT-5 for the numbers at the same time.
What a shift of 5 for Rot5?
A shift of 5 allows the code to be reciprocal/reversible/symmetric, this means that 2 consecutive encryptions lead to find the plain number.
Source code
dCode retains ownership of the "ROT-5 Cipher" source code. Any algorithm for the "ROT-5 Cipher" algorithm, applet or snippet or script (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or any "ROT-5 Cipher" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) or any database download or API access for "ROT-5 Cipher" or any other element are not public (except explicit open source licence). Same with the download for offline use on PC, mobile, tablet, iPhone or Android app.
Reminder: dCode is an educational and teaching resource, accessible online for free and for everyone.
Cite dCode
The content of the page "ROT-5 Cipher" and its results may be freely copied and reused, including for commercial purposes, provided that dCode.fr is cited as the source (Creative Commons CC-BY free distribution license).
Exporting the results is free and can be done simply by clicking on the export icons ⤓ (.csv or .txt format) or ⧉ (copy and paste).
To cite dCode.fr on another website, use the link:
In a scientific article or book, the recommended bibliographic citation is: ROT-5 Cipher on dCode.fr [online website], retrieved on 2025-06-15,
