The alcohol content in a Budweiser beer varies by the drink. A regular Budweiser beer has approximately 5 percent alcohol and the different versions of Budweiser beverages have varying alcohol content levels. Bud Light has an alcohol content of 4.2 percent, Bud Ice has 5.5 percent and Bud Ice Light has 4.1 percent.
As the flagship beer of Anheuser-Busch, Budweiser stands as the best-selling beer in the United States as of 2014. On average, the alcohol by volume, or ABV, for beers is approximately 4.5 percent whereas for wine, it is 11.6 percent.
The yeast in beer during fermentation is responsible for the alcohol content in a drink, converting sugars into alcohol. As the yeast breaks down in fermented beer at around 10 percent ABV, beers generally have less alcohol than wines, which have a longer fermentation process. Liquor requires an extra chemical process to achieve even higher alcohol percentages.
While the alcohol content in a beer beverage is directly proportional to it's calorie count, certain beers are known to be better for calories per percent alcohol content ratio. Natural Ice, King Cobra and Molson Canadian 67 have more calories from alcohol as compared to its other ingredients. Budweiser Select, with 4.3 percent alcohol content, only has 99 calories per a 12-ounce serving.