A1Z26 is very simple direct substitution cypher, where each alphabet letter is replaced by its number in the alphabet.
This calculator allows you to encrypt and decrypt text with Atbash method
Calculator encrypts entered text by using Caesar cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.
This online calculator can decode message written with standard galactic alphabet symbols
This calculator uses Hill cipher to encrypt/decrypt a block of text
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".
Calculator encrypts entered text by using Vigenère cipher. Non-alphabetic symbols (digits, whitespaces, etc.) are not transformed.