Caesar Cipher Tool

The Caesar cipher is a simple code used to keep messages secret. You pick a number and shift each letter in your message by that many places in the alphabet. For example, if you pick 3, A becomes D, B becomes E, and so on. To read the secret message, you shift the letters back by the same number. Julius Caesar (may have) used this code to send secret messages.

Shift Amount: Encrypt Decrypt Paste to Input