DevUtilX

ROT13 Encoder Online

Encode your text using the classic ROT13 substitution cipher. Runs fully in your browser — fast, private, and secure.

How to Use the ROT13 Encoder

  1. Paste or type your plain text into the input editor
  2. Click the "Encode" button to convert it into ROT13
  3. View the encoded output in the right editor
  4. Use the copy button to copy the ROT13 result

💡 Pro Tip: ROT13 is a simple cipher that shifts letters by 13. Encoding the same text twice will bring it back to the original message.

What is a ROT13 Encoder?

A ROT13 Encoder is a tool that applies the ROT13 cipher to a piece of text. ROT13 ("rotate by 13 places") is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the alphabet. It is its own inverse, meaning the same algorithm is used for both encoding and decoding.

Why Use Our ROT13 Encoder?

  • Hiding Spoilers: To obscure text in online forums to prevent revealing spoilers for movies, books, or games.
  • Simple Obfuscation: To provide a basic level of text obfuscation that is not intended for serious security.
  • Puzzles and Games: To create simple ciphers for puzzles or geocaching.
  • Educational Fun: To demonstrate a basic cryptographic concept in a hands-on way.

🚀 Explore More Free Developer Tools

Don’t stop here! Supercharge your workflow with our other powerful converters & formatters.

🔒 ROT13 Decoder

Decoder ROT13 cipher to text

🔒 UTF-8 Encoder

Encode text to UTF-8

🔧 Hash Generator

Generate hashes (MD5, SHA-1, SHA-256, etc.) from input

💡 New tools are added regularly — bookmark DevUtilsX and stay ahead!

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