About ROT13 Encoder/Decoder

Apply ROT13 cipher encoding and decoding for simple text obfuscation. ROT13 is a classic letter-substitution cipher that replaces each letter with the letter 13 positions ahead in the alphabet, making text unreadable at first glance.

ROT13 is commonly used in online forums to hide spoilers, puzzle solutions, or mildly sensitive content. Since applying ROT13 twice returns the original text, this tool works as both an encoder and decoder for ROT13 content.