ROT13 Cipher
Encode and decode text using the ROT13 cipher — shift each letter by 13 positions.
How to Use ROT13 Cipher
- Enter or paste your text.
- Click Process to see the result.
- Copy the output as needed.
- The tool works entirely in your browser.
Quick Reference
| From | To |
|---|---|
| A | N |
| Hello | Uryyb |
| Z | M |
| Apply twice | Original text |
| Uppercase | Preserved |
| Numbers | Unchanged |
Use Cases
- •Quick text transformation.
- •Developer utility.
- •Data format conversion.
- •Educational purposes.
Formula
Each letter shifted by 13. ROT13(ROT13(text)) = text.
Frequently Asked Questions
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.