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Caesar Cipher

Encode/decode text using Caesar cipher (shift by 3)

The Caesar Cipher is one of the oldest known encryption techniques, used by Julius Caesar to protect military communications. It shifts each letter in the alphabet by a fixed number of positions (default: 3). It's a foundational concept in cryptography and classic coding challenges.

Input
0 chars·0 words
Output
0 chars·0 words

How to use

  1. 1Paste your plain text to encode it (shift of 3 is applied).
  2. 2To decode, paste the ciphered text — shift by 23 (–3) is the reverse.
  3. 3Copy the encoded output.