ROT13 인코더 & 디코더
「ROT13 인코더 & 디코더」는 텍스트 및 문서 작업을 위한 브라우저 도구입니다. 입력과 결과는 일반적으로 이 기기에서 처리되며 가입이 필요하지 않습니다.
사용 방법
사용 방법
- Enter up to 100,000 characters of plain text or ROT13 text.
- Apply ROT13 once to rotate every ASCII letter by 13 positions.
- Review the exact result, then copy it or download a text file. Apply ROT13 again to restore the original.
One symmetric letter substitution
ROT13 maps A–M to N–Z and N–Z back to A–M, with the same rule for lowercase letters. Because the alphabet contains 26 letters, applying the transformation twice restores the exact browser text value.
A deliberately narrow character scope
Only the ASCII ranges A–Z and a–z change. Digits, punctuation, whitespace, line breaks, accented letters, other scripts, emoji, and every remaining UTF-16 code unit in the browser text value stay in their original positions. Output length therefore always equals input length.
자주 묻는 질문
더 알아보기
Do I choose between encode and decode?
No. ROT13 uses the same operation in both directions. Apply it once to transform the text and a second time to restore the source.
Will accented or non-English letters change?
No. ROT13 is defined here only for the 26 ASCII English letters. Characters such as é, ñ, 中文, and emoji remain unchanged.
Is ROT13 secure encryption?
No. It is a simple, widely recognizable substitution used for obfuscation and puzzles. Anyone can reverse it immediately by applying ROT13 again.