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.

クイックリファレンス

変換元変換先
AN
HelloUryyb
ZM
Apply twiceOriginal text
UppercasePreserved
NumbersUnchanged

使用例

計算式

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

よくある質問

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.