how many proof alcohol is beer
One ounce of beer contains less alcohol than one ounce of spirits, but the standard serving of beer is a 12-oz. can or bottle. Hereâs how it adds up: Beer contains between 4 and 7 percent alcohol by volume, with the average being 5 percent alcohol by volume. 12 oz. x 5 percent alcohol by volume = 0.6 oz. of alcohol/serving. The same is true of wine. The standard serving of wine is 5 oz., which generally contains between 11 and 13 percent alcohol by volume. 5 oz.