Cryptogram Solver
Decode substitution cipher cryptograms interactively.
Map each cipher letter and watch the decoded text update live.
How to solve a cryptogram
- Paste your cipher text into the text area above.
- Each unique letter appears in the substitution table.
- Type your guesses for each cipher letter — the decoded text updates instantly.
- Common techniques: single-letter words are usually A or I; the most frequent letters are often E, T, A, O.