Caesar Cipher Decoder

Decode Caesar Cipher Online

Caesar Cipher Decoder Caesar Cipher Encoder

A Caesar cipher is a simple and ancient method of encrypting and decrypting messages by shifting each letter of the alphabet by a fixed number of positions. For example, if the shift is 3, then A becomes D, B becomes E, and so on. This tool allows you to decode any Caesar cipher message online, without knowing the shift value. You can either enter the ciphertext manually or paste the encoded Caesar cipher. The tool will try all possible shift values and display the most likely plaintext based on letter frequency analysis.

List of Steps How to it works

To use this tool, follow these simple steps:

  1. Enter the ciphertext in the input box.
  2. Click on the “Decode” button to start the decoding process.
  3. The tool will show you all possible shift values and their corresponding plaintexts in a table below the input box.
  4. Click on the “Decode” button, now plain decoded text will be in the output box, that you can copy or download as a text file to use.

Benefits of this tool

This tool has several benefits for anyone who wants to decode a Caesar cipher message:

  • Fast and easy to use. You don’t need to install any software or do any calculations by yourself.
  • Accurate and reliable. It uses a frequency analysis algorithm that compares the letter distribution of the ciphertext with the expected letter distribution of the English language. This way, it can find the most probable shift value and plaintext.
  • It is versatile and flexible. You can decode any Caesar cipher message, regardless of its length, complexity, or language.