Encode and Decode ROT13
Use ROT13 to obscure text — the go-to cipher for spoilers, puzzle answers, and content warnings.
Shifts each letter by 13. Self-inverse — applying it twice returns the original.
ROT13 tips
ROT13 shifts every letter by 13 positions. It's self-inverse: applying it twice returns the original text — so encode = decode.
ROT13 is widely used on forums and communities to hide spoilers. Readers can decode at their own choice without the answer being immediately visible.
Puzzle solutions and hints in some games are ROT13-encoded in readme files and FAQs — a convention dating back to Usenet in the 1980s.
ROT13 does not encrypt letters, digits, or punctuation — only the 26 Latin letters are shifted. Non-letter characters pass through unchanged.
사용 방법
왜 저희 도구인가요?
Also check out…
Create Caesar Cipher Puzzles
Encode hidden messages in Caesar cipher for scaven
Learn Classical Cryptography
Explore Caesar, Atbash, and Vigenère ciphers to un
Send Secret Messages
Encode personal messages, notes, and private commu
Apply the Atbash Cipher
Reverse the alphabet with Atbash: A becomes Z, B b