Morse Code translator

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

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

This online calculator builds symbol frequency table for a given message

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

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.

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

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

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.

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

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

This calculator can help avoid unwanted word repetition in prose. It counts the number of occurrences of each word in the document, both globally, and within the "sliding window" distance before and after each word. It highlights the words which are used frequently near each other.

This calculator can help avoid unwanted word repetition in prose. It counts the number of occurrences of each word in the document, both globally, and within the "sliding window" distance before and after each word. It highlights the words which are used frequently near each other.

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

This online calculator can check if a phrase is a pangram.

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".

This online calculator can check if a word/phrase is an isogram.

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

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

This online calculator filters lines of text by removing designated lines or, you can say, leaving only designated lines