OhMyCalc

ROT13 Cipher

Encode and decode text using the ROT13 cipher — shift each letter by 13 positions.

How to Use ROT13 Cipher

  1. Enter or paste your text.
  2. Click Process to see the result.
  3. Copy the output as needed.
  4. The tool works entirely in your browser.

Riferimento Rapido

DaA
AN
HelloUryyb
ZM
Apply twiceOriginal text
UppercasePreserved
NumbersUnchanged

Casi d'Uso

Formula

Each letter shifted by 13. ROT13(ROT13(text)) = text.

Domande Frequenti

How to use?
Enter the data and click the process button.
Is my data safe?
All processing happens in your browser. No data is sent to a server.
Is it free?
Yes, all tools are completely free.