Caesar Cipher Brute Force Decoder

Try every Caesar shift from 1 to 25 and compare all decoded candidates at once.

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This decoder is for Caesar messages when the shift is unknown. Paste the ciphertext and compare all 25 possible shifts in one browser-side result.

When to use it

Use this tool when a fixed-shift Caesar or ROT message is likely, but the key is missing. Read down the candidate list and pick the line that forms meaningful text.

Scope

The decoder shifts English A-Z letters and preserves numbers, punctuation and spaces. It does not solve substitution ciphers with shuffled alphabets.