There are 284 calories in 650 ml of Beer. Budweiser Can. If you’re looking for a low-cal beer to drink while you’re foraging in the wilderness, Busch may be for you. Calories in Budweiser Budvar Original Czech Lager 6 x 330ml. The 355-milliliter can of Budweiser beer contains 147 calories. 1.Budweiser Beer. Per 100ml - 39 calories | 0 fat. Budweiser’s Zero begins a major marketing push Wednesday on an alcohol-free beer that packs only 50 calories. A 12-ounce can of Busch has 114 calories, 6.9 grams of carbs, and 0.8 grams of protein. It has 145 calories, which is quite high by any standards as far as beer is concerned. Get full nutrition facts and other common serving sizes of Beer including 1 fl oz and 100 g. In terms of calories, Budweiser beer can be considered among the heaviest in the market. Calories in Budweiser Lager Beer Bottles 6 x 300ml. 2.