www.wysiwygwebbuilder.com

Hi,
how can I import a page where calculations are done.

Example:
http://www.sengpielaudio.com/Rechner-ktivungsgrad.htm

After the import, no calculation works.

thank you for your help

You can add custom code via the HTML object
http://wysiwygwebbuilder.com/add_html.html

Unfortunately there was an error in the link from me.

http://www.sengpielaudio.com/calculator-efficiency.htm

Can I create such calculations (forms) also with WYSIWYG?

The mathematical formulas are known.

You can try to use the built-in calculations
http://wysiwygwebbuilder.com/conditions.html

But using the HTML object will also work.