I think you are closer than I am to the right answer, however, I just checked your hypothesis without any , or .
Here the values are, understandably, off the charts.
Sorry to wake up an old post, but I have found some issues using the onebeer converter.
Being European, I will typically use a decimal comma instead of a decimal point.
However when using the onebeer converter, this is apparently of some importance.
Entering a Original Brix of 12.25 and a...