Convert tools

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.

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

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

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

FAQ

ROT13 Text Converter — What are the supported inputs and limits?

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

Format references

Tool page updated: