This free tool will help you identify the type of encryption, as well as give you guidance about solving it and any available cipher decoder. This tool uses AI/Machine Learning technology to …

🔢 Numbers to Letters Convert numeric sequences to letters using mappings like ASCII, A1Z26 or the periodic table of elements. Quickly test number-based ciphers or encodings in puzzles.

Encodes and decodes the mirrored-alphabet Atbash cipher (A↔Z, B↔Y), a classic monoalphabetic substitution.

The cipher has been in use since the 1500s, and is also know by the names Masonic Cipher, Napoleonic Cipher, Tic-Tac-Toe Cipher, Pig Pen and Freemason’s Cipher.

Overview of the Zodiac Killer ciphers, with background, known solutions, and links to analysis tools.

This is a complete guide to book ciphers (also called book codes) and the tools you need to decode them. A book cipher consists of numbers and a book or text that is used to translate …

While the Jewish mezuzah commonly employs a Caesar cipher to encrypt the names of god, the cipher letters themselves are considered a divine name in their own right, with the power to …

This Cipher Identifier Tool will help you identify which type of cryptogram you are dealing with. The American Cryptogram Association has a comprehensive list of types of cryptograms.

The keyed Caesar cipher starts the alphabet with a keyword and then applies a Caesar-style shift. This page is both a guide and a hands-on tool so you can experiment with different keys, see …

Find the most commonly used character in the cipher text. The most commonly used letter in English is the letter E, so if your most frequently used character is R, you’re probably looking …