Decoders, solvers and translators for the ciphers that turn up in puzzle hunts. They work as you type, never send your text anywhere, and carry no ads. Stuck on a message you can't place? Start with the cipher identifier.
Don't know what you're looking at? Start here. These work out the cipher, the key, or both.
Encode and decode with a key. Most of these will also find the key for you if you don't have it.
Letters drawn as shapes, dots or flags. Type to draw them, or tap the symbols to read a message back.
No key and no secret, just a different alphabet. These turn up everywhere in puzzle hunts.
Nothing matches that yet. Try the cipher identifier, or browse the cipher guides.
Look at the characters before anything else. Dots and dashes are
Morse.
Only 0s and 1s are binary.
Numbers no higher than 26 are almost always
letter positions.
A long run of mixed-case letters and digits ending in = is
Base64.
If it's letters that don't read, the question is whether the letters themselves changed or only their order. Run frequency analysis: if E, T and A are still the commonest letters, the message has been shuffled, so try the rail fence. If other letters dominate, it's a substitution: try Caesar first, then the substitution solver. If no letter stands out at all, it's probably Vigenère.
Or skip all of that and paste it into the cipher identifier, which runs those checks for you.