Display

Cipher Wheel

Type some letters, choose how far to move them, and the wheel does the rest. Moving back undoes a code; moving forward makes one.

Decode or encode

Direction
Move by 3

Result

—

How does it work?

Each letter moves along the alphabet. Moving back 3 turns D into A, and wraps around at the start, so A moved back 3 becomes X. Moving forward does the opposite. Spaces and numbers stay as they are.

Print this page, cut out both circles, and pin the small one on top of the big one through the middle.

A cipher wheel: two rings of the alphabet, A to Z, one inside the other. A A B B C C D D E E F F G G H H I I J J K K L L M M N N O O P P Q Q R R S S T T U U V V W W X X Y Y Z Z NPLP