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ROT13 Text Converter

Apply ROT13 to Latin letters; apply it again to restore the original text.

Convert in your browser · No sign-up

Only A–Z and a–z change. Numbers, punctuation and other scripts remain unchanged. ROT13 does not provide secrecy.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Result

Add your input or load an example, then run the tool. Your result will appear here.

How to use

  1. Apply ROT13 to Latin letters; apply it again to restore the original text.
  2. Choose the mode or options, then run the tool.
  3. Review the result, then copy or download the TXT file.

Example

Hello World! → Uryyb Jbeyq!

Details and limitations

Text stays in your browser; it is not sent to a conversion server.

Format references

Tool page updated: