Security
Caesar Cipher
Encrypt and decrypt text using the Caesar cipher with a customizable shift value.
1-25
The Caesar cipher shifts each letter by a fixed number of positions in the alphabet.
With shift 3: A → D, B → E
Documentation
How to Use
1
Enter Text
Type or paste the message you want to encrypt or decrypt.
2
Set Shift Value
Use the slider to choose how many positions to shift letters (1-25).
3
Choose Case
Toggle to preserve or convert uppercase/lowercase.
4
Encrypt/Decrypt
Click to process your text.
5
Brute Force
Click to see all 25 possible decodings.
Pro Tips
ROT13 is its own inverse
Brute force tries all 25 shifts
Examples
Input
ABC
Output
DEF