Caesar Cipher

Apply the classic Caesar cipher — one of the oldest known encryption techniques. Shift each letter by a chosen number of positions. Supports any shift from 1 to 25, with both encoding and decoding.

Input

Output

Examples

Caesar shift 3

Input:

HELLO with shift 3

Output:

KHOOR

How to Use Caesar Cipher

1Enter your text
2Set the shift value (1-25)
3Click Encode or Decode

Frequently Asked Questions

How does the Caesar cipher work?

Each letter is shifted a fixed number of positions down the alphabet. A shift of 3 turns A→D, B→E, etc.

Is this secure for real use?

No, Caesar cipher is extremely weak and easily broken. Use modern encryption like AES for real security.