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• Gravity Falls Bill's symbol substitution cipher decoder

  This online calculator can decode messages written with Bill's symbol substitution cipher

• Standard Galactic Alphabet decoder

  This online calculator can decode message written with standard galactic alphabet symbols

• Substitution Cipher Tool

  The tool to encrypt/decrypt messages with simple substitution cipher given as key. It is also useful for manual cryptanalysis of substitution cipher - when you have message written in English alphabet partially decrypted with automatic tool and want to tweak the key.

• Playfair cipher

  This online calculator encrypts and decrypts a message given Playfair cipher keyword. Non-alphabetic symbols (digits, whitespaces, etc.) are ignored.

• A1Z26 cipher

  A1Z26 is very simple direct substitution cypher, where each alphabet letter is replaced by its number in the alphabet.

• Hill cipher

  This calculator uses Hill cipher to encrypt/decrypt a block of text

• Caesar cipher

  Calculator encrypts entered text by using Caesar cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.

• Vigenère cipher

  Calculator encrypts entered text by using Vigenère cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.