ROT13 Cipher

ROT13 (rotate by 13 places) is a Caesar cipher that replaces each letter with the letter 13 positions after it in the alphabet. Because the alphabet has 26 letters, applying ROT13 twice returns the original text - making it a symmetric cipher.

No. ROT13 only transforms A-Z and a-z characters. Numbers, spaces, punctuation, and special characters pass through unchanged. Only alphabetical characters are rotated.

ROT13 (rotate by 13 places) is a Caesar cipher that shifts each letter 13 positions forward in the alphabet. Since the English alphabet has 26 letters, applying ROT13 twice returns the original text. It's commonly used to hide spoilers, jokes, and puzzle answers online.

No. ROT13 is trivial to break — the same operation both encodes and decodes. It provides zero cryptographic security. Use proper encryption like AES for protecting sensitive data. ROT13 is only useful for obfuscating content from casual reading, not for security.

ROT13 only affects letters A-Z and a-z. Numbers, punctuation, spaces, and other symbols pass through unchanged. Some implementations also support ROT5 for digits (0-4 ↔ 5-9) and ROT47 for a broader set of printable ASCII characters.

No - ROT13 is not encryption, it's obfuscation. It's commonly used to hide spoilers in online forums or obscure text from casual reading. For actual security, use proper encryption like AES or our Base64 encoder for simple encoding.