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  • 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

  • Base 64 encoding and decoding

    The calculators encode string to base64 string and decode back to original string. Special characters (+/) , generally produced by base64 algorithm, can be replaced by the data provided in additional parameter.

  • Caesar cipher

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

  • Count the number of words

    The calculator counts word number in a given text. It can be used for rough calculation of translation cost. Can be used for word number calculation in software resources.

  • Hill cipher

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

  • Morse Code

    Morse Code translator

  • Shannon Entropy

    This online calculator computes Shannon entropy for a given event probability table and for a given message

  • Symbol frequencies table

    This online calculator builds symbol frequency table for a given message

  • Vigenère cipher

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

  • Wordpress plugin

    With Planetcalc plugin for Wordpress you can easily insert any planetcalc calculator in your wordpress-based site or blog pages.

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