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Other Calculators
Caesar Cipher Shifter
Encode or decode text using a classic Caesar cipher, shifting every letter by a fixed number of positions in the alphabet.
Result
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About the Caesar Cipher Shifter
The Caesar cipher is one of the oldest known encryption methods, named for Julius Caesar who reportedly used it for military messages. It shifts every letter forward (or backward) by a fixed number of positions in the alphabet.
Formula: Encoded Letter = (Letter Position + Shift) mod 26, wrapping from Z back to A
Non-letter characters like spaces, numbers and punctuation are left unchanged, and letter case is preserved. Because there are only 25 possible shifts, the Caesar cipher offers no real security today, but it remains a classic teaching example of substitution ciphers.
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