ROT13 is symmetric - Encode & Decode are the same!
Enter plain text → get encoded output. Enter encoded text → get decoded output. The same operation works both ways!
Input (Plain or Encoded Text)
Result (Encoded ↔ Decoded)
💡 How to Use
To Encode:
Type "HELLO" → Get "URYYB"
To Decode:
Type "URYYB" → Get "HELLO"
The magic: ROT13 rotates each letter 13 positions. Since there are 26 letters, applying it twice returns the original. Click Swap to move the result back to input and verify!
Alphabet Mapping
Original
ABCDEFGHIJKLMNOPQRSTUVWXYZ
ROT13
NOPQRSTUVWXYZABCDEFGHIJKLM