Developer Essentials · Free Tool

ROT13 Encoder

Rotate text by 13 places — the classic reversible cipher — right in your browser. Also does ROT5 for digits and ROT47 for all printable ASCII. Nothing is uploaded.

Variant

Live

Input

Output

How it works

ROT13 shifts each letter 13 places through the 26-letter alphabet, so applying it twice returns the original — it's its own inverse. It's not encryption (there's no key), just a reversible way to hide spoilers or obfuscate text. ROT47 does the same across the 94 printable ASCII characters.