# Rot47 decoder

World's simplest crypto tool
This browser-based utility converts data that was previously encrypted with the ROT-47 cipher into human-readable data. It performs the reverse operation of the ROT-47 encrypt operation and rotates all characters by 47 positions backward. Created by cryptonerds from team Browserling.

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## What is a rot47 decoder?

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This online utility decodes previously ROT47-encrypted data. The ROT47 cipher is a very simple encoding scheme that only garbles the given text but doesn't really encrypt it. First of all, only the ASCII table characters from the range 33 to 126 can be encoded. Second, the cipher simply replaces characters with other characters that are 47 positions apart. Third, it doesn't encrypt spaces and line breaks so the word and line boundaries can easily be seen. Fourth, the decryption procedure is very similar to the encryption procedure. If the encryption increments characters by 47 positions, then decryption decrements characters by 47 positions. What's more interesting, because there are 94 characters in the ASCII range 33 to 126 and the cipher works modulo 47, shifting and unshifting characters by 47 positions is equivalent. Cryptabulous!

## Rot47 decoder examples

Click to useROT-47 Decrypt a Quote

In this example, we load an unreadable string of ASCII characters as the input. This messy data has been encrypted with the ROT-47 cipher and is unreadable. We apply the ROT-47 decryption algorithm on this data and can read the wise advice from the famous artist Mathihiole.

pCE DA62<D H96C6 H@C5D 2C6 F?23=6 E@ 6IA=2:?]

Art speaks where words are unable to explain.

Decode Text with Numbers

This example applies the ROT-47 decoding cypher to the obscure input text and reveals an interesting fact about money. The output contains not only letters but also numbers and a dollar sign but they can't be seen in the input. That's because the encoding and decoding range includes these characters (unlike ROT-13 which doesn't include these characters).

p S` 3:== 4@DED d 46?ED E@ >2<6]

A $1 bill costs 5 cents to make.

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You can pass input to this tool via

__?input__query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinecryptotools.com/rot47-decrypt-data

__?input__=pCE%20DA62%3CD%20H96C6%20H%40C5D%202C6%20F%3F23%3D6%20E%40%206IA%3D2%3A%3F%5D
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