If I set it to the exact same amount (200 gramms) the difference in OG is even bigger... (1035 vs 1038) The meaning of my post was: I think it should not be any different. Or, if it should, then is there a logical explanation for this? And which is the best suited to calculate starter OG...

Hello support, if you check the Batch Statistics for Extract Base Recipes page calculates with 45 ppg as per stated in the notes below the calculator and the Yeast Pitch Rate and Starter Calculator calculates with 42 ppg. https://www.brewersfriend.com/extract-ogfg/...