Need Letters First!
This substitution cipher workbench can be used to encode and decode messages using monoalphabetic substitution ciphers from classical cryptography. You can create a cipher alphabet based on a keyword and a caesar shift. Messages can be encoded and decoded using this alphabet.
The solver is designed so you can experiment with different possible solutions for an unknown message. Enter the ciphertext in the message box and check for different caesar shifts.
We also have cipher decoder tools for Atbash Ciphers, a simple Caesar Cipher Decoder, and a Rot13 Decoder.
Stuck with a word scramble? Check out our word scramble solver.