Letter Numbers

One of the first ciphers that kids learn is this "letter number" cipher. You replace letters with a number: A=1, B=2, C=3, etc.

When encrypting, only letters will be encoded. Non-letters will be treated like spaces. When decrypting, numbers will be changed back to letters, hyphens will be removed, and the rest fill act like spaces.

Method: "ABC XYZ" becomes

Your message:

This is your encoded or decoded text: