# ROT13

> Apply ROT13 to text in either direction (the cipher is its own inverse). A classic Caesar shift for puzzles and lightly obfuscated spoilers, not encryption. Runs entirely in the tab.

Runs in your browser. Nothing is uploaded.

[Encode](https://toolbuddy.dev/categories/encode.md)

## About this tool

ROT13 rotates Latin letters by 13 places; digits and punctuation pass through. Applying it twice restores the original, so both direction pills run the same transform.

How to use: paste text, copy the rotated form. Use it for spoilers and classic puzzles, not for passwords, tokens, or anything that must stay confidential. Related: AES encrypt if you needed real confidentiality in the tab.

Example: Hello becomes Uryyb. Non-ASCII letters are left unchanged. This is a Caesar cipher with a fixed shift, not a general ROT-N tool.

Transform is a local regex. After load, it works offline.

## Related Encode tools

- [Base64 Encoder](https://toolbuddy.dev/tools/base64-encoder.md): Encode and decode Base64 (and UTF-8 text) instantly in the browser. Convert strings for Data URIs, HTTP headers, and binary-safe transport. Nothing is uploaded, so you can encode without pasting secrets into a public encoder.
- [Base32 Encoder](https://toolbuddy.dev/tools/base32-encoder.md): Encode and decode RFC 4648 Base32 in the browser. Handy for OTP secrets, human-typed tokens, and case-insensitive transport. Codec runs locally with no upload.