Changes

'''Alcohol By Volume (ABV)''' is simply a measure of the percentage of alcohol as measured by a percentage of volume over the total volume of the beer. This is equivalent to the ''proof'' value of higher alcohol liquors. Beer typically has an alcohol by volume value of between 3 and 8%. Barley wine may have an ABV as high as 10% or more. To calculate Note that while the approximate majority of the world typically quotes alcohol by volume, simply measure in the original gravity and final gravity US alcohol percentage is often measured as a 3 digit [[specific gravityAlcohol By Weight]] and apply this formula:.

To calculate the approximate alcohol by volume, simply measure the [[Original Gravity]] and [[Final Gravity]] as a 3 digit [[specific gravity]] and apply this formula: : '''ABV = (Orig_gravity - Final_gravity) * 131''' or to be a little more precise try:: '''ABV = ((1.05 * (Starting SG – Final SG)) / Final SG) / 0.79 * 100'''