14 ciphers · analyze · brute force · generator · history · compare
Each letter becomes a 5-character code using two symbols (A and B by default).
Letters become two-digit coordinates on a 5×5 grid (I and J share a cell).
Hides a message inside a longer text by taking specific letters from each word.
Map each letter to any character. The key is a 26-character string where position 1 = what A becomes, position 2 = what B becomes, etc.
Tries all 25 shifts. Click any result to copy it.
Auto-logs every encode/decode. Click any item to copy its output.