Puzzles & Ciphers
Free cipher tools and escape room puzzle makers: Caesar, Vigenère, pigpen and more, a cipher identifier, printable cryptograms and a game flow planner.
10 free tools
Ciphers
Caesar Cipher Encoder & Decoder
Encode or decode a Caesar cipher with any shift from 1 to 25, or crack one: all 25 shifts listed and ranked by how English each looks, best guess first.
Vigenère Cipher Encoder & Decoder
Encode or decode a Vigenère cipher with a keyword, see the key lined up under each letter, and estimate an unknown key with the index of coincidence.
Atbash Cipher Encoder & Decoder
Encode or decode Atbash, the cipher that reverses the alphabet (A↔Z, B↔Y). One box works both ways, keeps your punctuation and shows the full key.
Pigpen Cipher Translator
Turn text into pigpen cipher symbols, download them as SVG or PNG for printing, and decode pigpen by clicking the symbols on the key. Two key layouts.
Cipher Identifier
Paste a mystery code to see its letter frequencies and index of coincidence, a ranked list of likely ciphers and encodings, and one-click decoding.
Letter to Number Cipher (A1Z26)
Convert letters to numbers (A=1 to Z=26) and numbers back to letters. Choose dashes, spaces or commas as separators, or switch to A=0 numbering.
Rail Fence Cipher
Encode or decode a rail fence (zigzag) cipher with 2 to 20 rails and an optional offset, see the zigzag grid, or try every rail count to crack it.
Escape room design
Escape Room Puzzle Ideas
A filterable library of 48 escape room puzzle ideas: what players see, how it's solved, what to buy or make, which lock it opens and mistakes to avoid.
Escape Room Game Flow & Hint Planner
Plan an escape room's flow: enter game length, puzzles, paths, players and target escape rate to get a time budget per puzzle, hint schedule and run sheet.