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/ https://www.brewersfriend.com/yeast-pitch-rate-and-starter-calculator/ This way if you calculate with a fixed batch size and DME addition it gets you different OG's for the two calculators. Is this intentional because of difference in the usual batch size or just an error? If yed, then which is better/more accurate to calculate starter OG? Thank you for the answer/fix in advance!