I've made a tool that can convert your pfsense configuration to an opnsense configuration. It's not perfect, but it can do a majority of the legwork for you.

You can pull the site via docker:

• docker run --name pf2opn -p 4200:80 -d mwood77/pf2opn

Or use it on the web here:

• https://www.pf2opn.com/
• The conversion happens 100% on your machine; there are no network requests / cookies / or any kind of tracking on the site.

As always, please try the converted configuration in a test image before you apply it to a production environment. If you find any bugs, please reach out.