About CipherSteps

CipherSteps is a free collection of classic cipher tools, code translators, and printable puzzles. Use it to try a method, see how each letter changes, or make an activity of your own. Each tool explains its alphabet, key, and variant so you can follow the result. These methods are for learning and puzzles; they are not secure ways to protect confidential information.

A result you can inspect

Start with an example, change one setting, and follow the letters or grid. Worksheets use the same calculations as the tools, so you can move from an on-screen example to paper practice. The guides offer activities to try and help with the controls, printing, and downloads.

Operated by CipherSteps.