Plain vodka contains zero carbohydrates. A standard 1.5-ounce shot of 80-proof vodka has about 97 calories, and every one of those calories comes from alcohol itself, not from carbs, protein, or fat. This makes vodka one of the lowest-carb alcoholic options available.
Why Vodka Has Zero Carbs
Vodka starts from carbohydrate-rich ingredients like grains, potatoes, or grapes. During fermentation, yeast converts those sugars and starches into alcohol. Then comes distillation, which separates the alcohol from everything else. Alcohol boils at a lower temperature than water (about 78°C versus 100°C), so when the fermented liquid is heated, the alcohol vaporizes first. Those vapors are captured and cooled back into liquid form.
Sugars, starches, and proteins are large, complex molecules that can’t vaporize during this process. They stay behind in the original mash. The result is a spirit that’s essentially just alcohol and water, with no residual carbohydrates. This is true regardless of the source ingredient. Vodka made from wheat, corn, or potatoes all end up with zero carbs after distillation.
Where the Calories Come From
If there are no carbs, fat, or protein, you might wonder why vodka has any calories at all. Alcohol (ethanol) is its own calorie source. It provides about 7 calories per gram, which sits between carbohydrates (4 calories per gram) and fat (9 calories per gram). A 1.5-ounce pour of 80-proof vodka delivers roughly 97 calories purely from that ethanol content.
Higher-proof vodka means more alcohol per serving, which means more calories. A 100-proof vodka contains 50% alcohol by volume compared to 40% in 80-proof, so the calorie count climbs even though the carb count stays at zero.
Flavored Vodka Is a Different Story
Plain vodka is carb-free, but flavored vodkas vary. Some brands use a process called infusion, where natural flavors like lemon, cucumber, or vanilla are introduced during production without adding sugar. These typically stay at or near zero carbs.
The ones to watch out for are flavored vodkas and premixed vodka drinks that use sugary syrups added after distillation. A lemonade vodka cocktail, for example, can contain close to 200 calories and 26 grams of carbs per serving, with 25 of those grams coming from added sugars. Products labeled with dessert-style flavors like whipped cream, caramel, or cotton candy are more likely to contain added sweeteners. If the label lists sugar or corn syrup in the ingredients, it’s no longer a zero-carb drink.
Mixers Add Most of the Carbs
For most people, the carbs in a vodka drink come entirely from what’s mixed in. A vodka soda (vodka plus club soda) stays at zero carbs because club soda is just carbonated water. But tonic water, despite looking and tasting similar, typically contains around 22 grams of sugar per 8-ounce serving. Cranberry juice cocktail, orange juice, and ginger ale all add significant sugar and carbs to an otherwise carb-free base.
If you’re tracking carbs, the simplest swaps are club soda, plain sparkling water, or a squeeze of fresh citrus. These keep the carbohydrate count at or near zero while still giving you flavor.
Why You Won’t Find Nutrition Facts on the Bottle
You may have noticed that vodka bottles don’t carry the standard nutrition label you’d see on food. That’s because the Alcohol and Tobacco Tax and Trade Bureau (TTB), which regulates alcohol labeling in the United States, does not require nutrient content labels on alcoholic beverages. Brands can voluntarily include calorie and carbohydrate information, but if they do, TTB rules require them to list calories, carbohydrates, protein, and fat per serving to avoid misleading consumers. Most brands simply skip it entirely.
Vodka, Carbs, and Ketosis
People on low-carb or ketogenic diets often search for the carb content in vodka because they want to know if it will interfere with ketosis. The zero-carb count is good news on paper, but the full picture is more nuanced. When you drink alcohol, your liver prioritizes breaking down ethanol over its other metabolic tasks, including burning fat for energy.
Research published in the American Journal of Clinical Nutrition found that when healthy volunteers replaced dietary carbohydrates with alcohol while still eating fat, they developed a significant increase in ketone production, driven by changes in how the liver processes fatty acids. In practical terms, alcohol doesn’t kick you out of ketosis through carbohydrates, but it does temporarily reshape how your body handles fat metabolism. Your liver essentially hits pause on its normal fat-burning work until the alcohol is cleared. For people counting carbs strictly, vodka fits the macros, but the metabolic effects go beyond the nutrition label.