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  • Gravity Falls Author's symbol substitution cipher decoder

    This online calculator can decode messages written in the Author's symbol substitution cipher

  • Gravity Falls Bill's symbol substitution cipher decoder

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

  • Index of Coincidence

    This online calculator calculates index of coincidence (IC, IOC) for the given text

  • PATHFINDER cipher checker

    This online calculator decrypts digits encrypted by PATHFINDER type of cipher.

  • Pigpen cipher decoder

    This online calculator can decode messages written in the pigpen cipher

  • Rail fence cipher

    This article contains two calculators, first can be used to encode message with the rail fence cipher, second can be used to crack message encoded with the rail fence cipher by brute force. Decoded simply outputs decoded message for different number of "rails".

  • Standard Galactic Alphabet decoder

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

  • 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.

  • Atbash cipher

    This calculator allows you to encrypt and decrypt text with Atbash method

  • 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.