This priming sugar calculator is based on an equation I found on the Home Brew Digest mailing list. You can find the email, written by Bill Pierce, in digest #5471. Use this calculator to estimate how much dextrose (corn sugar) to use when bottling your beer. As a point of reference, for American ales, typical values of priming sugar for a batch of 5 gallons of beer will between 90 and 130 grams. You will need a browser that supports JavaScript to use the calculator.
Definitions:
Vbeer ≡ Volume of beer in US gallons VCO2 ≡ Desired carbonation level in volumes of CO2 Tferm ≡ Fermentation temperature of beer in °F PS ≡ Priming sugar weight in grams
Typical CO2 levels in bottled beers
Beer style Volumes CO2 ------------------------------------------- British-style ales 1.5 - 2.0 Porter, stout 1.7 - 2.3 Belgian ales 1.9 - 2.4 European lagers 2.2 - 2.7 American ales & lagers 2.2 - 2.7 Lambic 2.4 - 2.8 Fruit lambic 3.0 - 4.5 German wheat beer 3.3 - 4.5
Priming sugar estimate:
⇒ PS = 15.195 × Vbeer × (VCO2 - 3.0378 + (0.050062 × Tferm) - (0.00026555 × (Tferm)2))