How to use ROT13 Encoder and Decoder
- Enter text, values, or choose a file.
- Select any available options.
- Run the tool and copy or download the result.
About this tool
Apply the reversible ROT13 substitution cipher. The tool is designed for quick everyday use in a modern browser.
Frequently asked questions
Is this tool free?
Yes. It is free to use and does not require an account.
Are my files uploaded?
Image and text tools are designed to process data locally in your browser whenever possible.
Does it work on mobile?
Yes. The interface is responsive and works on modern mobile and desktop browsers.