Although there are many different types and variations of white wine, on average, a 25 ounce bottle contains approximately 600 calories. A glass of white wine averages 120 calories.
White wine generally averages approximately 25 calories per ounce. A standard pour of white wine is generally 4 ounces, but most wine enthusiasts regularly exceed this amount by an ounce or two, which explains why the average number of calories per glass is around 120 calories. Some sweeter white wines, such as Moscato or Reisling, contain more calories while dryer white wines, such as Chardonnay or Pinot Grigio, contain fewer calories per ounce.