A standard 25.4 ounce bottle of dry white wine contains about 510 calories. The calorie count in a bottle can vary depending on the brand of wine and the size of the bottle.
Dry white wine is any white wine that is not sweet, which usually means that there are no added sugars. However, this doesn't necessarily mean that dry wines are lower in calories, because they may also have a higher alcohol content. In wines, calories usually come from the alcohol and the sugars. If counting calories look for a dry wine with a lower alcohol content.
The standard bottle of wine is about 25.4 ounces, which is equal to 750 mL or six glasses of wine. A 125 mL, exactly one-sixth of a standard bottle, glass of dry white wine is about 85 calories. So, 85 calories times six glasses in a bottle of wine equals 510 calories. However, wine bottles can come in a variety of sizes from the two-glass Split up to the Nebuchadnezzar, which holds 120 glasses of wine. When drinking, keep a count of the number of glasses of wine downed and multiply that by 85 calories to determine how many calories each bottle of wine contained.