ABV - Calculation of Alcohol Content - Beer

Beer

The calculation for beer is:

Where 1.05 is number of grams of ethanol produced for every gram of CO2 produced and .79 is the density of ethanol,

  • ABV = ((1.05 * (Starting SG – Final SG)) / Final SG) / 0.79 * 100

However, many brewers use the following formula:

  • ABV = (Starting SG - Final SG) * 131

Read more about this topic:  ABV, Calculation of Alcohol Content

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