# 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. ### 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. --- *Source: [ocxly.com/rot13.html](https://ocxly.com/rot13.html) — OCXLY, free 100% client-side privacy-first tools. Free ROT13 encoder and decoder that runs entirely in your browser. Also supports ROT5 (digits) and ROT47 (all printable ASCII). Reversible, no uploads, no tracking.*