ROT13 Converter
Encode/decode text using ROT13 cipher.
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Features
Simple Letter Substitution
Replaces each letter with the 13th letter after it in the alphabet.
Symmetrical Cipher
Applying ROT13 twice returns the original text.
Instant Two-Way Conversion
Type in either box to see the immediate conversion in the other.
About ROT13 Converter
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's a Caesar cipher with a fixed shift of 13. This tool provides a fun and easy way to encode and decode messages, often used in online forums to hide spoilers or jokes.
How to Use ROT13 Converter
- Enter Text: Type your message into the "Plain Text" box to encode it.
- Enter Cipher: Type a ROT13 message into the "ROT13 Text" box to decode it.
- View Result: The conversion happens instantly in the opposite text box.