Caesar / ROT13 cipher

Shift letters by any amount. ROT13 is one click.

  • Runs in your browser
  • Free
  • No sign-up
Loading Caesar / ROT13 cipher…

How to use it

  1. Paste or type your text in the box.
  2. Adjust the options if you need to.
  3. Copy the result or download it.

Questions

Is my text sent to a server?

No. Everything happens in your browser. Your text is not uploaded or stored.

Is it free?

Yes, you can use it for free. A subscription removes limits and unlocks premium tools.