@Amer, are you using this one?
https://kippenjungle.nl/kruisingCO.html
@3KillerBs there are several different calculators on that site, and each displays a little differently.
I think Amer was using this one:
https://kippenjungle.nl/kruisingCO.html
I usually use this one:
https://kippenjungle.nl/kruising.html
And I know plenty of folks use this one:
http://kippenjungle.nl/breeds/crossbreeds.html
I'm pretty sure there are a few more as well, but if there is a handy list anywhere on that site I haven't blundered into it yet.
Thank you.