The number of calories in a beer varies depending on its type and alcohol content. Here are some general estimates:

• A 33 cl (330 ml) bottle of normal beer with about 5% alcohol contains around 140-150 calories.
• Light beers typically have fewer calories, around 50-100 calories per 330 ml.
• Pint (568 ml) of average beer has roughly 182-210 calories.
• Higher alcohol beers (craft or stronger ales) can range from 170 to 350 calories or even more per pint.
• A standard formula to estimate calories in beer is: ABV% × 2.5 × ounces of beer. For example, a 16 oz beer with 6% ABV has about 240 calories.
• Darker and stronger beers generally have more calories than light lagers.
• Non-alcoholic beers have significantly fewer calories, about half or less than regular beers.

So, a typical regular beer has roughly 140-210 calories per bottle or pint, but it can vary widely depending on the type and strength of the beer.