Cryptogram Solver

Tool to automatically solve cryptograms. A cryptogram is a short piece of encrypted text using any of the classic ciphers. Usually it is simple enough that it can be solved by hand. The most common types of cryptograms are monoalphabetic substitution ciphers, called Aristocrats if they contains spaces or Patristocrats if they don't. Another common name is cryptoquip.

Note: You can use the tool below to solve monoalphabetic substitution ciphers. There are many other types of cryptograms. This Cipher Identifier Tool will help you identify and solve other types of cryptograms.

Substitution Cipher Solver Tool

You must enter the message.



Click on a letter and then type on your KEYBOARD to assign it.


You can decode (decrypt) or encode (encrypt) your message with your key. If you don't have any key, you can try to auto solve (break) your cipher.

  • Language: The language determines the letters and statistics used for decoding, encoding and auto solving.
  • Iterations: The more iterations, the more time will be spent when auto solving a cipher.
  • Max Results: This is the maximum number of results you will get from auto solving.
  • Spacing Mode: This is about the spaces (word breaks) in the text. In most cases it should be set to Automatic. In case a specific letter (for instance X) is used as word separator, set it to Substitute.

Auto Solve Results

Score Text

Not seeing the correct result? Try changing the Auto Solve Options or use the Cipher Identifier Tool.

Letter Frequencies
Letter Count Percent
Word finder

Saved work

    Cryptogram Features

    • The most common cryptograms are monoalphabetic substitution ciphers.
    • The American Cryptogram Association (ACA) uses the names Aristocrat (a cryptogram that includes separators between words) or Patristocrat (a cryptogram that doesn't separate words). In both cases, a letter is not allowed to be substituted by itself.
    • Cryptograms originally were intended for military or personal secrets. The first know usage for entertainment purposes occured during the Middle Ages.
    • Instead of spaces, a letter like X can be used to separate words.
    • Frequency analysis can be used to find the most commonly used letters.
    • A Caesar Cipher is a special kind of cryptogram, in which each letter is simply shifted a number of positions in the alphabet. It can easily be solved with the Caesar Cipher Tool.
    • A ROT13 Cipher is similar to a Caesar Cipher, but with a fixed shift of 13 letters. It can easily be solved with the ROT13 Tool.

    Sample Cryptogram

    Code-breaking is not only fun, but also a very good exercise for your brain and cognitive skills. Why not try your cipher solving skills on this sample crypto?

    rgkirwtp sjt yrwz sjcs frzz nt tchm wtazrtp sjt qcg dow fjtg hjt vgofh moi cwt rg sjt boigswm od sjt frgvrth hjt frzz drgp moi cgp qcvt moi czz jtw hzclth