ROT13 Converter

ROT13 Converter

Convert text with the ROT13 cipher using TextNivo’s free ROT13 Converter. ROT13 replaces each letter with the letter 13 positions away in the alphabet.

The same operation works for both encoding and decoding. Enter or paste your text and the converted result appears instantly.

How to Use the ROT13 Converter

Enter the text you want to transform into the input box. The converter automatically applies ROT13 to the letters in your text.

For example:

Hello World

becomes:

Uryyb Jbeyq

Apply ROT13 to Uryyb Jbeyq again and it returns:

Hello World

ROT13 Encoder and Decoder

ROT13 is symmetrical, which means the same transformation can be used to encode and decode text. You don’t need separate encoding and decoding modes.

This makes the tool useful as both a ROT13 encoder and ROT13 decoder. Paste ROT13 text into the converter whenever you want to transform it back into readable text.

What Is ROT13?

ROT13 stands for Rotate by 13 places. It is a letter-substitution cipher in which each letter is replaced by another letter 13 positions away in the alphabet.

Because the English alphabet contains 26 letters, applying the transformation twice returns the original text.

ROT13 is a simple text transformation and should not be treated as secure encryption.

Why Use TextNivo’s ROT13 Converter?

TextNivo’s ROT13 Converter runs directly in your browser and lets you transform text without installing software. After conversion, you can copy the result, download it as a text file, or print it.

For related encoding and decoding tasks, you can also use TextNivo’s Base64 Converter, Morse Code Converter, Binary Converter, and Hex Converter.