Changes

'''Alcohol By Volume (ABV)''' is simply a measure of the percentage of alcohol as measured by a percentage of 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. Note that while the majority of the world typically quotes alcohol by volume, in the US alcohol percentage is often measured as [[Alcohol By Weight]]. 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: