This online calculator tries to decode substitution cipher without knowing the key. It uses genetic algorithm over text fitness function to break the encoded text. Note that you may need to run it …

Tool to encrypt / decrypt a message by substitution cipher (all sizes) by replacing one or more characters with one or more others

Substitution Solver. This tool solves monoalphabetic substitution ciphers, also known as cryptograms. These are ciphers where each letter of the clear text is replaced by a …

Tool to automatically or manually solve substitution ciphers. The substitution ciphers is one of the oldest classical ciphers. Each letter is replaced by a different letter of the alphabet, so solving …

Alphabetical substitution cipher: Encode and decode online . A monoalphabetical substitution cipher uses a fixed substitution over the entire message. The ciphertext alphabet may be a …

This multi decoder is designed to solve a wide variety of codes and ciphers, especially useful for Geocaching. Easy to use for both mobile and desktop browsers!

Design your own unique cipher patterns and substitution rules. Create personalized encoding systems while maintaining consistent translation standards.

Paste your cipher text in to the text box and click Analyze. You will be provided with two tabs showing the frequencies of your cipher text, use the dropdowns or the buttons to quickly 'try …

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Select an algorithm below to encode or decode messages or learn more about the supported algorithms. Encode and decode text using common algorithms and substitution ciphers.