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iTextKitTools

Caesar Cipher Encoder

The Caesar cipher shifts each letter a fixed number of places down the alphabet. This tool applies the classic shift of 3 — a great hands-on intro to cryptography and a staple of puzzles and escape rooms.

Result

The result will appear here…

How to use the Caesar Cipher

  1. 1Type your text above.
  2. 2The shifted (encoded) text appears instantly.
  3. 3To decode, shift back by the same amount.

How the Caesar cipher works

The Caesar cipher shifts every letter a fixed number of places along the alphabet, wrapping from Z back to A. With the classic shift of 3, A→D, B→E and so on. To decode, shift back by the same amount. It’s named after Julius Caesar, who used it for private correspondence — though today it’s only suitable for puzzles and learning.

Frequently asked questions

What shift does this use?+

It uses the classic Caesar shift of 3 places. Decoding requires shifting back by 3.