Tool for encoding and decoding with the Caesar cipher, a simple and famous shift cipher that replaces each letter with another one further down the alphabet. Compatible with ROT13 and …

Method in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet. The method is named after Julius Caesar, who used it in his private …

In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code, or Caesar shift, is one of the simplest and most widely known encryption techniques.

Use our Caesar cipher encoder to convert messages into cipher text or test every possible key to solve caesar cipher puzzles without knowing the original shift.

Free Caesar cipher decoder supporting 25+ languages. Learn the history, master the math, and try the examples.

Discover the timeless Caesar cipher through our modern Caesar cipher translator. Named after Julius Caesar, who relied on it for secure military communications, this classic encryption …

What was the code of Julius Caesar? Julius Caesar typically used a shift of 3, meaning A became D, B became E, etc. This was simple but effective for military communications in ancient Rome.

The Caesar cipher is one of the earliest and simplest encryption techniques. Named after Julius Caesar, who used it to communicate with his generals, it's a type of substitution cipher where …

Free online caesar cipher decoder and encoder to decrypt and encrypt Caesar cipher messages. Learn about this classic cryptography technique. © 2025 • Caesar Cipher Decoder.

Caesar cipher is a simple substitution cipher. It rotates the plaintext alphabet by a fixed number of places. The latter is called the “shift” and forms the key of this cipher. Substitution alphabet of …