⌨ SET SHIFT & ENTER TEXT INPUT
🔑 Shift Value (1–25): ROT13 = shift 13
Input Text
💥 Please enter some text!
📚 TRY AN EXAMPLE — CLICK TO LOAD! EXAMPLES
Encode (Shift 3)
"Hello World"
↓ Khoor Zruog
Decode (Shift 3)
"Khoor Zruog"
↓ Hello World
ROT13 (Shift 13)
"Hello World"
↓ Uryyb Jbeyq
Secret Message
"DevDunia Rocks"
↓ Encode with shift 7
🧠 HOW CAESAR CIPHER WORKS EXPLAINER
1

Named after Julius Caesar who used it to send secret military messages. Each letter in the alphabet is shifted by a fixed number of positions.

2

With shift 3: A → D, B → E, Z → C. The alphabet wraps around — it's modular arithmetic mod 26!

3

Numbers, symbols, and spaces are not changed. Only A–Z and a–z are shifted. Case is preserved throughout.

4

Brute Force tries all 25 possible shifts at once — since there are only 25 options, the correct one is always visible!

5

ROT13 (shift 13) is special: encoding and decoding use the same operation since 13 + 13 = 26 (full alphabet).