ROT13 Encoder / Decoder Privacy: All processing runs locally
Apply the ROT13 cipher to text. Since ROT13 is its own inverse, encoding and decoding use the same operation.
Input
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Output
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How It Works
ROT13 ("rotate by 13 places") is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. Since the English alphabet has 26 letters, applying ROT13 twice returns the original text, making it its own inverse.
For example: A becomes N, B becomes O, N becomes A, and so on. Non-alphabetic characters (digits, punctuation, spaces) remain unchanged.
ROT13 is not encryption and provides no security. It is commonly used to obscure spoilers, puzzle answers, or mildly offensive content in online forums.