Vodka is one of the few alcoholic drinks that contains zero carbohydrates. A standard 1.5-ounce shot of plain, unflavored vodka has 0 grams of carbs, 0 grams of sugar, and roughly 97 calories. This applies to all unflavored vodkas regardless of the brand or the base ingredient, whether it comes from potatoes, wheat, rye, or corn.
How Many Carbs Are in a Shot of Vodka?
A standard shot is 1.5 ounces, which equals about 44 milliliters. That serving contains 0 grams of carbohydrates. It also contains no sugar and no fiber.
The calorie count comes entirely from alcohol itself. Pure alcohol provides about 7 calories per gram. A typical 80-proof vodka is 40% alcohol by volume, which is why a shot lands around 97 calories.
This makes vodka a common choice for people following low-carb or ketogenic diets. But the “zero carbs” label only applies to the plain product. Once flavoring or sweetener is added, the math changes completely.
Why Does Vodka Have No Carbs?
Carbohydrates are sugars, starches, and fibers. During vodka production, the base grain or potato is fermented to convert starches into alcohol. The liquid is then distilled, often multiple times.
Distillation separates the alcohol from the remaining solids, including sugars and starches. What remains in the final product is mostly ethanol and water. The distillation process is thorough enough that virtually no carbohydrate molecules survive into the bottle.
This is why the carb count is zero rather than “very low.” The process physically removes the carbohydrate material. It is not a matter of small amounts slipping through — it is a structural absence.
Does the Base Ingredient Change the Carb Count?
No. Vodka can be made from potatoes, wheat, rye, corn, grapes, or even sugar beets. The final distilled product still contains zero carbohydrates.
The base ingredient can affect the mouthfeel, flavor, and quality of the vodka. It does not affect the nutritional profile. After distillation, the carbohydrate source is gone.
Some people assume potato vodka must contain carbs because potatoes are starchy. That assumption is incorrect. The starch is consumed during fermentation and removed during distillation. The finished spirit is carb-free regardless of origin.
What About Flavored Vodka?
Flavored vodkas are a different story. Many flavored products contain added sugar or syrup after distillation. This reintroduces carbohydrates.
A flavored vodka can contain anywhere from 0 to 11 grams of carbs per shot, depending on the brand and the flavor. Citrus, vanilla, and berry flavors are common offenders. Some “dessert” flavored vodkas, like whipped cream or cake, can be especially high in sugar.
The only reliable way to know is to check the nutrition label or the manufacturer’s website. If a flavored vodka does not list nutritional information, assume it contains added sugar. Some brands now offer “zero sugar” flavored vodkas that use artificial sweeteners, but these are not the standard.
How Do Mixers Affect the Carb Count?
The carb count of a vodka drink depends almost entirely on what you mix it with. Plain vodka is carb-free. The mixer is where carbohydrates enter the picture.
Common mixers and their approximate carb content per standard serving:
- Tonic water: about 32 grams of carbs per 12 ounces
- Regular soda: about 39 grams of carbs per 12 ounces
- Cranberry juice: about 36 grams of carbs per 12 ounces
- Orange juice: about 33 grams of carbs per 12 ounces
- Diet soda or club soda: 0 grams of carbs
- Soda water with lime: 0 grams of carbs
A vodka tonic is not a low-carb drink even though the vodka itself is. The tonic water delivers a significant carbohydrate load. A vodka with diet cola or club soda and lime remains essentially carb-free.
If you are tracking carbs strictly, the mixer matters more than the spirit. This is a common point of confusion for people new to low-carb eating.
Does Alcohol Interrupt Fat Burning?
Zero carbs does not mean zero metabolic impact. When you drink alcohol, your body prioritizes metabolizing it over burning fat.
Alcohol is treated as a toxin that needs to be processed quickly. While the liver works on clearing alcohol, fat oxidation slows down or pauses. This effect is temporary and reverses once the alcohol is metabolized.
This means vodka will not kick you out of ketosis by adding carbs. It can, however, temporarily stall fat loss because your body is busy processing the alcohol. For people on ketogenic diets, this is a separate consideration from the carb count.
Is Vodka the Lowest-Calorie Alcohol?
Among straight spirits, vodka is tied with gin, rum, tequila, and whiskey. All unflavored distilled spirits contain roughly the same calories and zero carbs at the same proof.
Vodka is not uniquely low-calorie compared to other spirits. What makes vodka popular for dieting is its neutral flavor, which pairs well with zero-calorie mixers. A vodka soda with lime is one of the lowest-calorie alcoholic drinks available.
For comparison, a 5-ounce glass of wine contains about 120 calories and 3-4 grams of carbs. A 12-ounce light beer contains about 100 calories and 3-5 grams of carbs. A shot of vodka has fewer calories than both, but the difference is modest.
Can You Drink Vodka on a Low-Carb Diet?
Yes, plain vodka is compatible with low-carb and ketogenic diets. It contains no carbohydrates and will not affect blood sugar directly.
There are caveats. Alcohol can lower blood sugar several hours after drinking, especially on an empty stomach. This is relevant for people with diabetes who take insulin or certain oral medications. The carb-free nature of vodka does not make it risk-free for blood sugar management.
Alcohol also lowers inhibitions, which often leads to poor food choices later in the evening. Many people who stick to strict low-carb eating during the day undo their progress with late-night snacks after drinking. This is a behavioral consideration, not a nutritional one.
Moderation remains the standard recommendation. For healthy adults, that means up to one drink per day for women and up to two drinks per day for men. One drink equals 1.5 ounces of distilled spirits.
Does Vodka Contain Gluten?
Vodka made from wheat, rye, or barley contains trace amounts of gluten protein after distillation. Most experts agree that the distillation process removes gluten to levels below the standard threshold for gluten-free labeling.
The United States allows vodka distilled from gluten-containing grains to be labeled gluten-free, provided no gluten ingredients are added after distillation. This is because testing cannot detect gluten in the final product.
People with celiac disease or severe gluten sensitivity should consult their healthcare provider. Some report reactions to grain-based vodkas, though clinical evidence does not consistently support this. Potato, corn, and grape vodkas are naturally gluten-free alternatives if you prefer to avoid the question entirely.
Frequently Asked Questions
How many carbs are in a shot of vodka?
A standard 1.5-ounce shot of plain, unflavored vodka contains 0 grams of carbohydrates. It also contains 0 grams of sugar and about 97 calories.
Does flavored vodka have carbs?
Yes, most flavored vodkas contain added sugar and can have anywhere from 0 to 11 grams of carbs per shot. Check the nutrition label, as sugar-free flavored options exist but are not the standard.
Is vodka keto-friendly?
Plain vodka contains no carbs and will not disrupt ketosis directly. However, alcohol temporarily slows fat burning while your body processes it, and mixers like juice or tonic water add significant carbs.
Which vodka has the least carbs?
All plain, unflavored vodkas contain zero carbs regardless of brand or base ingredient. The carb difference only appears with flavored products, so choose unflavored vodka and zero-carb mixers for the lowest carb count.

