ROT13 Encryption Tool
Protect your text with simple ROT13 cipher encryption. Perfect for basic text obfuscation, spoiler protection, and light security needs.
ROT13 ("rotate by 13 places") is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the alphabet. While not secure for sensitive data, it's perfect for hiding spoilers, creating simple puzzles, or light text obfuscation.
How to Use This ROT13 Encryption Tool
Enter your text in the "Original Text" field above
Click the "Encrypt ROT13" button to convert your text
Copy the encrypted result using the "Copy Result" button
To decrypt, simply run the encrypted text through this tool again
Simple Encryption
ROT13 provides basic text obfuscation by rotating each letter 13 places in the alphabet. It's reversible using the same process.
Instant Results
Our tool processes your text immediately in the browser with no server processing, ensuring your data never leaves your computer.
Character Preservation
Non-alphabetic characters (numbers, symbols, spaces) remain unchanged, maintaining your original formatting.