How many calories are in white wine?

White wine has 25 calories per 1 ounce serving on average. The number of calories varies depending on the amount of sugar. The more sugar a wine contains, the more calories it has.

When a wine is very dry, its sugars have turned to alcohol during the fermentation process; as a result, it contains fewer calories. For example, a sweet, late harvest table wine contains less alcohol and more sugar. Due to its increased sugar content, it has 34.8 calories per fluid ounce. However, an ounce of very dry Müllar-Thurgau has only 22.7 calories because of its increased alcohol content.