Brewing calculations

Residual or Real Extract gives a true measure of the residual sugar in beer

RE = AE + .4654(ABW) - .003615(ABW)2 / .9962

Original Gravity

OG = 100[(2.0665(ABW) + RE) / (100 + 1.0665(ABW)]


ABW = (ABV x 0.791) / Specific Gravity of beer

ABV = (ABW x Specific Gravity of Beer) / 0.791

Approximate calories per 12 oz.

Calories = [Grams Alcohol] x 7.0 calories/gram + [Grams Carbohydrate] x 4.0 calories/gram

Calories = [(Specific Gravity x 355) x ABW/100] x 7.0 + [(Specific Gravity x 355) x RE/100] x 4.0

Real or Apparent Degree of Attenuation

RDA = 100 (OG - RE)/OG) 

ADA = 100 (OG - AE)/OG)

Extract in Wort  Lincoln Equation

E(lbs. extract) = [(Wort Volume (Bbl)) (2.58/(1/OG(oP) - .00382)]

Theoretical Maximum Extract

TME = (Total Grist Weight (lbs.) x Weighted average Coarse Grind Extract As-is of grain bill)

Brewhouse Efficiency

Brewhouse Efficiency (%) = (Actual lbs. of extract in wort (Lincoln Equation / Theoretical Maximum Extract) x 100%

Mash or Kettle Salts

CaSO4 -  approx. 29% Ca++ by weight
4.0 grams per Barrel of water or wort = 10 ppm as Ca++

CaCl2   -  approx. 36% Ca++ by weight
3.25 grams per Barrel of water or wort = 10 ppm as Ca++


Some Cargill products are only approved for use in certain geographies, end uses, and/or at certain usage levels. It is the customer's responsibility to determine, for a particular geography, that (i) the Cargill product, its use and usage levels, (ii) the customer's product and its use, and (iii) any claims made about the customer's product, all comply with applicable laws and regulations.